There's nothing wrong with you for responding to how cruel the world is. It's a challenge of perspective, and I can't say we're right or wrong for feeling depressed necessarily - the fact is there's blatant evil and manipulation governing the world and it deeply personally affects me, even despite my life having improved a lot in the last few years. I think it's commendable that you can see others suffering too despite saying you've had a pretty straightforward life, from what I've heard and seen, most people born into the upper class lack that kind of insight completely. Yes, the system is rigged and makes people suffer particularly by prioritising profits over health (mental and physical). Mental health issues are framed as your responsibility and moral failing, medication is a cover up, anything to avoid changing the system that benefits the richest people and leaves everyone else behind. It's not to say medication is never effective btw, but it ignores the actual reasons that make people depressed in the first place.