3. Just because you're nice, doesn't mean you're immediately desirable. If every nice person was desireable, grandma would be drowning in dicks. You don't have to be a model, but you do have to be clean. The amount of 'nice guys' I've met who smell like a high school locker room and dress like Comic Book Guy from The Simpsons is astronomical. Doesn't matter how nice you are, if I can smell your breath from across a table, I'm not going to kiss you. This is an easy fix gentleman.
2. If you've ever said the statement (or any variation of it) 'I'm a nice guy', then you aren't. This is fact. If you have to state it, it isn't true. If you truly were a nice guy, I would have noticed it immediately. A truly nice guy doesn't need to tell you because it's obvious in his actions.
And finally, the number one reason: Nice guy doesn't always equal good man. I'd much rather date a good man who isn't necessarily nice than a nice man who isn't necessarily good. People can be nice to you and still be awful and disrespectful and cruel. Plenty of awful, awful people are nice. Like Jeffrey Dahmer and Ted Bundy. They were real nice to people. Doesn't make them good men, and I think we can all agree that they weren't.
This concludes the lesson.