<prompt> Human: Had a light bulb moment after chatting with a friend about spending money for no good reasons! Most of the time when ppl like myself buy stuff, its really to satisfy the feeling of searching , seeing something you like, and being able to purchase it. What if we convert that something to things that can be more sustainable and useful AND someday can grow your wealth? In my case, SP 500 ETF! Or it could be any investment vehicle that have more stable growth.Hope you like this idea! Assistant: So, I really like this idea, for the same reasons you and uOnTheStreetsIRan state. However, how do you go about this without incurring excessive transaction fees from buying in small allotments?Human: i was also thinking about the small trading costs, but hey, you are spending money on unnecessary things anyways, so I guess that can justify. Besides, there are platforms that have low to no trading costs. I think Robinhood is one of them but I definitely have to research to confirm.  <response>: Yeah, as long as youre buying shares of a fund where you dont have to pay commissions, this isnt a bad idea. 5-8 in commissions on repeated purchases of 100 or less is... not a good idea. But again, thats easily avoided - most major platforms offer commission free options that include one of the major index ETFs. 