That's why you shouldn't leave it up to a kid with very little money who quite literally cannot understand the long term impacts of their decisions to invest or not. Instead, put aside something for them. You can even start well before they are 17.

Naw, dawg, Imma try and try to encourage them to get started early and put a little bit away, because it's good for them. I'm acutely afraid of a scenario where they have bad habits and anything I leave them they flush down the toilet because of those bad habits. I'm hoping to leave them plenty, but they need to be in a position to not waste that for it to be worth anything.