Just because racism was "worse" and far more obvious back then does not mean it is not an issue now. You seem like a very smart person, so why even make posts like this? Imagine walking up to a gay man living in Jamaica and telling him "500 years ago they would have burned you alive, what're you complaining about?"
We have indeed been given much, otoh we have been handed a planet that is quickly driving towards ultimate self-destruction, we have been strapped to a rocket whose trajectory is completely unknown, the only thing we do know for a fact is that it will keep accelerating forever until it finally hits-- something. I don't want my kids to live in a world where there is more plastic in the oceans than fish, I don't want them to live in a world where half of Africa is infertile for the next ten thousand years because of aluminum factories, I don't want them to live in a world where all the rivers in India are littered with drugs and every other baby has a deformity, I don't want them to live in a world where the majority of grains, pigs, chickens and cows are extinct, forever, because some other species was easier to grow fat. These are the problems that all those that came before us caused, and we have to deal with it. We have to put on our wetsuit and dive deep into a pool of seething **** with the glimmer of hope being to somehow magically find the drain and plug it.