<prompt> Human: Atm, Ive been investing by buying a portion of bitcoin every month. .750. This has been going well for last 2 years and Im at about 18.75 bitcoins. I plan to retire from my job soon but was wondering advice on if once I hit 20 to just hold onto it and use it all as my retirement money. Ive never really done stocks as that changes over time but from research, it has seemed to favor bitcoin over time. Anyways, do you guys think I should just keep adding and stop at 20 or try and get more like 25 or 30? For reference purposes one bitcoin at todays price is about 1020 dollars it seems to be going up by at least 2 which would keep the money from being hurt by inflation.  <response>: Your not investing. You are speculating. Just because it has been going well, doesnt mean it will continue to go well. No one has a crystal ball. I would not want any meaningful of my net worth in bitcoin. Ive never really done stocks as that changes over time but from research, it has seemed to favor bitcoin over time.Its not reasonable to draw this conclusion. You only have 8 years of data on Bitcoin vs almost 100 years of the SP. 