I agree entirely. You should live ethically because it's the right thing to do, and the fact that it won't save the entire world on its own shouldn't be an excuse not to. That there's so much leftist pushback on this idea of maintaining your ethics in your personal life is really disheartening. Consumption really is a mind virus that is determined to keep you hooked, even among those who should know better.
If we can't maintain our ethics in the small bubble that is our own lives, how exactly do we intend to maintain them on a societal level? And if you don't respect nature now, why should I expect you to start respecting it after we change some laws? Start now, at least for some of it. You're gonna have to do all of this eventually anyways. So what do you have to lose?