I love watching Twitch, and watch 5-7 gamers regularly (almost every night). From what I can tell, most of them:
- Are in their mid-20's to early 30's.
- Live with their parents.
- Make just enough from Youtube/Twitch/Patreon/merch to fund their gaming rigs, buy new games, buy their own food, and maybe pay for an upgraded internet connection.
These are people who in some cases have hundreds of thousands of followers on Youtube and each Twitch stream attracts over two thousand viewers. It's not a good way to make a living.
I've asked several of them if they make a full-time living (via Twitch chat), and they've acknowledged the question, but didn't seem to want to really answer it.
A couple of them even make a joke out of it every time their sibling starts torrenting and it slows down their network connection.
If I ever have a kid, I'll support their dream of becoming one of these people. And I'll also tell them they're not living in my house past the age of 18. Figure out a way to make money while doing what you love.