That’s a very selfish way to look at it. “Nothing I can do so fuck it”. But there is. I agree with you, we should demand change in production, but you’re also being selfish just giving up and not altering your lifestyle just because “it’s already been made”.
Boycotts do work. If people actually followed through with them, and yeah, I’m boycotting any more fossil fuels in my house. 1 person doesn’t mean a whole lot, but if cynics like you started actually changing it might.