@ jinho, I don't think the content matters, if you can get cosmetic surgery done like those korean streamer girls, people will watch and tip you just for being pretty. Ultimately that aspect's effect on earning will greatly exceed the hardwork from content. It's actually highly inefficient for you to produce great content, vs the minimal effort to invest in being prettier.
As enthusiasts, we all agree that keyboards are important, but relative to the <ignorant> plebs out in the world watching videos, keyboard is just the headline, they stay and tip for other reasons that they themselves are unaware of.
Take any movie, replace a pretty girl with an ugly one, that movie suddenly isn't very engaging, even if it's more less the same movie.
Even if we assume there Exists enough hardcore keeb-enthusiasts to sustain a streamer, there are ALOT more trashy viewers out there which can make you millions instead.
The whole goal of streaming isn't to make lunch money, it's to make Boat money.
By all means, do both, but one area clearly has more ROI than the other.