I think some people are simply martyrs; they like playing the victim, and looking for sympathy. At the end of the day, they choose to be miserable, and complain about their horrible lives - instead of doing something to actually remedy the situation. They ALWAYS have a choice, and always make the wrong ones - only to complain about it.
These people are useless; all talk and no action. They also come with the strongest sense of entitlement; like they are owed by the world for their own problems and mistakes.
Common examples:
1.) The nice guy who complains that girl x is chasing after guy z - when he's so much better than he is. Yeah, so stop chasing after her, dumbass. But, he'd rather complain that she keeps going back to guy z - when the nice guy is doing the same thing with HER. He keeps going back to her, too. She is likely treating him like crap, using him, and so forth - just as she is going through with guy z. Then, the nice guy concludes that all girls are *****es who like *******s and use nice guys - when HE was the one chasing after this kind of person. He is no better than her, and she is no better than guy z. Everyone is complaining about the same thing, and doing nothing to better their situation. It's a hypocrisy wheel that keeps going round and round.
Certainly, girl x has a better option available in the nice guy, but so does the nice guy. There's nice girls chasing after him, but he'd rather go for the ***** chasing after an ******* - then complaining about it, and generalizing the entire gender. Wah wah, nice guys finish last. Woe is him. Get outta here with that mess....
2.) Being single and lonely without approaching anyone, ever. What do you expect, genius? These are the same people who complain because they're overweight - as they're laying on the couch stuffing their faces with junk food. All they do is complain about how fat/lonely/depressed they are. So do something about it! I could ***** smack a lot of people, sometimes...