There's always been classes...even among hunter-gatherer peoples. The ones that provided the food and/or went to battle were the leaders, the rest served them. I'm guessing even cave people had leaders of the group.
If we were all equal who would make the hard decisions and take the initiative to progress? lol
Anyway I think the idea of the "good old days" is make believe. Times have always been hard, and messed up and there's always been evil people and good people mixed. We're not any more worse people now than in the past, we just have different challenges and messed up things as times change.
Just what I think at least.