One of the things to think about is rockets don't have energy budgets. They have delta-v budgets. Try and think of it that way but: The majority of the energy in a 100km orbit above earth is in 'going sideways'. However besides the lack of numbers this doesn't answer your question.
For example how much dV is needed to gain attitude is at least the amount you would need to coast to your target altitude in a vacuum. But doing this as part of a way to get to orbit is only one (inefficient) way of getting there. The dV saving is at most this. There is no good bound in either direction.
A few things are worth considering to get a feel for the problem:
How long you have to spend fighting gravity also depends on how long you need to keep the rocket in the air before centripetal force and gravity balance each other and there's no universal answer to that question. Aero-properties and TWR affect what's optimal.
Rockets don't "fish-hop"; they don't go up until they reach orbital height, then sideways until they reach orbital velocity, instead they try and combine the two maneuvers which takes advantage of Pythagoras, but costs some aero-dynamic drag.
A little bit of extra or saved dV costs a lot. Anything you gain or loose is necessary the 'first' bit; you have to move the whole fully fueled rocket by this amount.
Let's do the simplified theory first. If dV was the only concern and there was no atmosphere. With infinite TWR, you could reach a "sea-level" orbit without any energy or dV being expended upwards. Further the theoretically most efficient way to use dV to gain altitude is a Hohmann Transfer, the Hohmann transfer from sea level to 100km around earth is small. Concretely around 60m/s, which compared to 7800m/s for the orbital velocity in the first place is tiny.
So yes, there are many meaningful ways in which your intuition and the saying about staying there are correct. If you simplify things down too much, then especially when you consider that going there then going fast enough to stay there is not a very efficient way of doing things: then 100% lifting rockets up before you launch them is silly, it gains very little for a lot of effort.
However, these are way to big assumptions to ignore. When you add these factors back in things start to make more sense. Drag and gravity losses are a significant factor in current rockets and they are designed to compromise these things. If you didn't need to worry about TWR and being aerodynamic rockets could be made much lighter, which is the holy grail as this means less fuel is need, which makes them lighter. Etc, etc.
I know this is anti-climactic but its really hard to put a number on how much mass/money this would save as it changes a lot of factors, but its hard to imagine this not being at least a 20-30% mass saving.
Another thing is wings etc don't just get you altitude, they might also get you speed. By not needing to use valuable dV just to keep you up, you can fly through the air for long enough to make use of atmospheric engines. Jet engines are a lot more fuel efficient than rocket engines at low speeds, so if you can it would make sense in theory to want to use them when you can.
If you usefully use this extra speed and knock mach 1 off your dV requirements the savings could be huge.
Moja ya mambo ya kufikiria ni roketi hawana bajeti ya nishati. Wana bajeti ya delta-v. "Kama unavyoona, ""mengi ya nishati katika mzunguko wa kilomita 100 juu ya dunia ni katika kwenda upande.""" Hata hivyo mbali na ukosefu wa idadi hii haina kujibu swali lako. Kwa mfano, kiasi cha dV kinachohitajika kupata mtazamo ni angalau kiasi ambacho unahitaji pwani kwa urefu wako wa lengo katika utupu. Lakini kufanya hivyo kama sehemu ya njia ya kufika kwenye mzunguko ni njia moja tu (isiyo na ufanisi) ya kufika huko. DV kuokoa ni zaidi ya hii. Hakuna kizuizi kizuri katika pande zote mbili. "Kama unavyoona, kuna mambo kadhaa ambayo yanapaswa kuzingatiwa ili kupata hisia ya tatizo: ""Ni muda gani unapaswa kutumia kupambana na mvuto pia inategemea muda gani unahitaji kuweka roketi katika hewa kabla ya nguvu ya centripete na mvuto kusawazisha kila mmoja na hakuna jibu la ulimwengu kwa swali hilo.""" Aero-properties na TWR kuathiri nini ni bora. Roketi hazipandi hadi kufikia urefu wa mzunguko, kisha upande hadi kufikia kasi ya mzunguko, badala yake zinajaribu kuchanganya maneuvers mbili ambazo zinatumia faida ya Pythagoras, lakini gharama ya drag ya aerodynamic. Kwa hivyo, kuongeza kidogo au kuokoa dV inagharimu sana. Chochote wewe kupata au kupoteza ni muhimu 'kwanza' kidogo; una kuhamisha roketi nzima kikamilifu fueled na kiasi hiki. Hebu kufanya nadharia rahisi kwanza. DV ni moja ya wasiwasi wa kawaida, na hakuna kitu cha kufanya. Kwa TWR isiyo na kikomo, unaweza kufikia mzunguko wa "kiwango cha bahari" bila nishati yoyote au dV kutumiwa juu. Kwa mfano, kwa mfano, dV inaweza kutumika kwa kiwango cha juu cha Hohmann, ambayo ni kiwango cha juu cha dV kutoka kiwango cha bahari hadi 100 km kuzunguka dunia. Kwa mfano, katika hali ya 60m s, ambayo ni sawa na kasi ya mzunguko wa 7800m s, ni ndogo sana. Kwa hiyo, kuna njia nyingi zenye maana ambazo hisia zako na usemi kuhusu kukaa huko ni sahihi. Kama wewe kurahisisha mambo chini sana, basi hasa wakati wewe kuzingatia kwamba kwenda huko na kisha kwenda haraka kutosha kukaa huko si njia ya ufanisi sana ya kufanya mambo: basi 100% kuinua roketi juu kabla ya kuzindua ni kipumbavu, ni inapata kidogo sana kwa juhudi nyingi. Hata hivyo, hizi ni njia ya dhana kubwa kupuuza. Unapoweka mambo haya tena, mambo huanza kuwa na maana zaidi. Uharibifu wa mvuto na mvuto ni sababu muhimu katika roketi za sasa na zimetengenezwa kuhatarisha mambo haya. Ikiwa hauhitaji kuwa na wasiwasi juu ya TWR na kuwa roketi za aerodynamic zinaweza kufanywa nyepesi zaidi, ambayo ni grail takatifu kwani hii inamaanisha mafuta machache yanahitajika, ambayo huwafanya kuwa nyepesi. Na kadhalika. Ni kweli kwamba ni vigumu sana kuamua kiasi cha pesa ambacho mtu anaweza kuokoa kwa sababu ya mabadiliko ya mambo mengi, lakini ni vigumu kufikiria kwamba hii si angalau 20-30% ya kuokoa. Jambo jingine ni mabawa nk si tu kupata urefu, wanaweza pia kupata kasi. Kwa kutohitaji kutumia dV yenye thamani ili tu kukuweka juu, unaweza kuruka hewani kwa muda mrefu wa kutosha kutumia injini za angahewa. Injini za ndege ni za ufanisi zaidi kuliko injini za roketi kwa kasi ya chini, kwa hivyo ikiwa unaweza, itakuwa na maana katika nadharia kutaka kuzitumia wakati unavyoweza. Kama wewe kutumika kwa manufaa hii kasi ya ziada na kupiga mach 1 mbali mahitaji yako dV akiba inaweza kuwa kubwa.