Earlier quoted context omitted.
I don't care that much for my own health, but I do care about my ecological footprint. Not because of X units of satisfaction I'll take from glaciers thirty years from now, but because I don't treat the world as my property. We're guests here and should behave accordingly.
>We're guests here and should behave accordingly. Guests of who, exactly?
Looking at "who was there before and will be after my visit", then human civilization outlives each and every one of us.