2) Capitalism is a decentralized system of allocating resources. By working and investing (even if just owning a retirement plan), you are taking part in it all. You may now collect your monocle and top hat.
3) Getting paid some fraction between 0 and 1 of the value you create is a fact of nature for all actors in the system. The company has to create more value for its customers than they pay for it, otherwise nobody would bother buying.
4) The system itself creates vast amounts of wealth and progress, for the entire society. You wouldn't have a good job and a good computer if it wasn't for all that extra value.
5) Don't confuse capitalists with capitalism. The people may behave badly, but the system is resilient - that's why it's been working well for centuries, through thick and thin.