Let's say you live in a rapist's house, and that rapist was excused to rape you because that's just how things go.
Now, imagine you were in the middle of a forest. Be grateful!
I'm extremely grateful that I eat better than any king could 200 years ago every day, I'm safe, I can move around freely, I can access information freely, I get a day off once a week..
I am too :) And things could be so much better with consistency applied morality, too :) In fact, our collective existence depends on it. We will go extinct otherwise.