I come back a lot to the parable of "who's to say what's good or bad?" (one telling of which can be found here:
https://thepowerofthrift.com/whos-to-say-whats-good-or-bad/ )
My more specific take: As a human of generally European-ish descent born in the United States, the wave of extinctions that gave land-dominance to mammals, the likely genocide of closely related hominids by the homo-sapiens, the ecological changes putatively caused by the first wave of human occupants including all the extinctions of large land animals on this continent, the subsequent genocide of the first human occupants, the conflicts and wars that caused my ancestors to emigrate, ... those were all necessary conditions for the exact experiences I've had in my life.
I'm not saying I support genocide! (my ancestors are mostly all Jewish.) I'm just saying that the farther something is in the past, the more it just seems like a fact of history, no matter how miserable and wrenching it was for all the organisms that lived through it.
We have no way of knowing what we're really creating, and it may well be that we're creating a hundred thousand years of extinctions and inhospitable weather which will be more difficult to live through for our descendants than the conditions we were born into. We may be radically shrinking our own natural habitat. We may be paving the way for a different dominant organism. We may be living in an era that future humans will give as much thought to as we give to the years 1000-1100 C.E. Who knows! and in the long game, the thousands and millions of years perspective, who's to say what's good or bad?