Here's a rant.
Class doesn't make you a better person, but it makes a difference to the privileges and oppportunities you get - and allows you to be rude to people of a different perceived class! I've seen very posh people being icily and very politely rude to someone who is not 'one of us' and I've seen and probably practiced inverted snobbery against those who appeared to condescend to me. Human pride has many expressions!
Obviously, it is what a person is that counts, but many of us will have experienced snobbery and exclusion from others on the basis of class, which actually no--one can choose and nobody earns. Even those who appear to change class through education or achievement only end up wondering which class they belong to and feeling a bit anchorless.
Pride being what it is, class will not be eradicated, though it may be changed. In America, they have supposedly abolished the old class system, but they have one, based on money and achievement, a meritocracy. Communist countries tried to abolish class distinctions by asserting that only the working classes mattered, but they soon got class distinctions again based on sheer power - and the bottom class was always the religious.
Class isn't really the problem. The problem is human pursuit of the great gods money, status, sex and power.
So there!