I think I'd rather have bad pipes than a bad heart tbh. Life and happiness are relative. Probably plenty of people in your examples happier and feeling more fulfilled than you on this current trajectory.

I'd love to see QoL improve everywhere. I effectuate the change that I can with the actions I can control. I volunteer and try to give some of my time and resources to help others have a better crack at life, rather than shun people at the risk of them degrading my life. It's not black and white, sometimes I have to be selfish to ensure the needs of my own family are met. But once their cups are full, I can help fill some other cups too.

You can protect what you got or focus on how others can get a slice of what you inherited from choices that likely preceded your existence.

Ultimately, a quote to consider:

"We do not inherit the earth from our ancestors, we borrow it from our children"

If you're taking more from the system than you're putting in and you're already in a good spot, you are a net negative to the people that gotta live on this rock long after you are dust. If you want that to be your legacy, that's for you - but it's not a life for me.