RE: I visited a ZOO and it did not feel good.

Not exactly sure how to respond to that, but let's see.
No other species on the planet takes other specimens, puts them in cages on display, keeps them as pets until they die, only to get another one, and uses them for trophies, food/furs/aphrodisiacs'/status symbols.
Mankind is the only one that destroys hundreds of square miles of habitat, just to plant palm oil trees (for example)
Maybe we are not causing climate change, but we certainly aren't helping.
For me, the source of "the problem" is as plain as the nose on our faces @stevenson7