Unlike most reviewers here, apparently I'm not a fan of soap operas. That's what Season 2-4 turned into. Season 1 had a great plot and a lot of energy and momentum even if some of the characters were extremely flawed and unlikable. But season 2 onward focused on unbelievably ridiculous character drama rather than an exciting plot. If you enjoy watching a show with characters which are self-destructive with few redeeming qualities, then seasons 2-4 might be your thing. For me, it was painful to watch such narcissistic, immature "adults" destroying their lives, their families, their friendships, their reputations, and their fortunes for the sake of ambition. Hollywood doesn't seem to be much interested in telling inspiring stories anymore, unless the message is "Hey, at least your life isn't as bad as *these* self-absorbed jerks!"
S1: 9/10 stars S2-4: 5/10 stars
S1: 9/10 stars S2-4: 5/10 stars