The reason this "nice guy" syndrome exists, is because when men are young, they're taught to be kind to women. Polite, charitable, etc.

So when they get into highschool, and start dating, they find out that women don't exactly go for the type of dude's their parents taught them to be.

When young, men notice that women, too often, choose guys that are not so nice to them, and are usually very good looking.

So, naturally, some guys assume that the behaviour women ACTUALLY like, isn't the "kind", "sweet", "friendly". But rather the "boisterous", "rude/bully", "careless" type.

So in their head, they confuse the good lessons their parents taught them about behaving a certain way to women, and assume that if they absorb that type of behaviour from not such great men, that they will have success.

When in reality, that type of behaviour only flies if you're very attractive.

And often times, these "nice guys" either aren't that attractive, or are average attractiveness.

The point they're missing is, that women are more shallow, the younger they are. For example, a teenage girl will care a LOT more about a 6 pack, than a 30 year old woman would.

And women aren't necessarily at fault for this. They're naturally attracted to "Alphas". That are often not as polite, but rather act more dominant. Regardless of them being bullies or rude, etc.

Also, how much personality can a teenage boy have? No wonder girls go for only good looking dudes when young. Because at least they're good looking. No matter how they're treated really.

Nice guys are sadly the product of women tho. Sure, they made wrong conclusions, but if women were naturally more attracted to kind, caring men, even at a young age, they'd have an easier time from the get go. But this way, in early dating, women like bad boys.

And yea, I know women that are more mature value kindness, being caring, etc. more than a six pack.

But the thing is, "nice guys" are often younger. I didn't see that many nice guys that weren't teens or in their 20's. So that would explain why they naturally grow out of it, when women naturally grow out of shallowness. Ofcourse, this depends on the person. Some women like abs in their 40's. And they don't compromise, lol. But most women, real women, value other attributes a whole lot more.