Don't mean to be rude Mr. Dumb Questions but it's a dumb answer.
Liking long hair is a natural sexual manifestation of a healthy male.
It pleases your senses. What's not to like?
Why do we like sex? For the exact same reason.
Think about this one:
Up unit the 20s of XX century in almost every culture (except some African and native Australian, Oceania and New Zeeland) women always wore their hair long!!! Why? Because otherwise men would not even look or touch them. In many cultures it was considered to be a punishment or a sign or religious dedication for a woman to cut her hair.
Long hair is the only way, the natural way, we like it instinctively as we like eating, drinking, breathing. Everything else is a perversion!
Any psychologically healthy male would prefer long haired women to a short haired one.
Why do some man prefer short hair? Because those girls are damaged goods. They look more down to earth, more accessible.
How many times those of you who are single chickened out when you saw a long-haired girl?
Same reason why some morons husbands want their women cut their beautiful hair - "keep the bitch home", humiliate her, make her look less worth.
If there were more real men around, those who take care and protect their ladies there would be more of them ladies... Real ladies, with long hair :-)
As to the fetish... Sure it can be a fetish, but that's not my thing.
I personally DON"T LIKE LONG HAIR. I like WOMEN with long hair.
Sorry for an oversimplified answer - just trying to make it short :-)