Boys are dumb

Boys are dumb. I used to like them a lot. They used to be fun to look at, to talk to, to tease, to flirt with, to be friends with. You get the drift. But now they are just dumb. Well Actually, I still like boys. But they are confusing little creatures. I don't even know where to begin with this topic!
Why do they do what they do? What compels them to say what they say? Why do they have to be so cute? Why do they have to act so incredibly stupid? Why do they think it's cool to be a jerk? I realize I may be generalizing quite a bit, but I am seriously wondering these questions.
So, what defines a cute boy? A dumb one?

Cute: (doesn't usually happen this way ;))
~He seems a little tough on the outside, but you get to know him and he’s really a sensitive guy.
~He is musically talented. What girl does not dream of a guy who can sing or play guitar?
~He dresses pretty nice. Not too nice. It can be kinda cute when I guy sorta tries, but fails to match his clothes.
~He opens the door for you.
~He tells you you’re beautiful, even you’re just really good friends. And he means it.
~He takes 5 minutes to fix his hair. Not more. Not less.
~He respects you for you.
~He teases you, but knows where to draw the line.
~When he’s with your friends and you, he acts the same as when you are alone.
~He makes inside jokes with you.
~He tells you his secrets.

Dumb:
~He won’t open up to you and show you his soft side.
~He pretends he is too cool for anything.
~He spends more time getting ready for the day than I do.
~He tells you you’re beautiful and act like you’re the only one, then the next day you see him do the same thing to your best friend.
~He is super mean to you and you have absolutely no idea why.
~He talks to you one day, then ignores you the next.
~He is a total slob.
~He expects you to do everything.

Probably more on this subject to come...