That's because it's all about them and what their infantile wants.
Right, obviously anyone who doesn't find a suitable mate is an immature jerk. Yeah, that's it. How's the view up there on that high horse of yours?
That's certainly a part of it, but there is no reason to dismiss male wants out of hand at infantile. Men have more freedom and choice when it comes to a female companion, and are exercising that choice. While selfishness as an obstacle to a long term, successful relationship is present in both men and women, that's not to say that most expectations of men and women are necessarily invalid.