I shall try.
However, correct me if I'm wrong, if Samson had been able to have a closer look at his wife, due to all that hair falling down in his eyes he wouldn't have ended his life as a demolition worker.
If it's any consolation, my own son also has fashionable long hair and one of my favorite passtimes is to dream openly about cutting it short in his sleep. (He doesn't always think that's funny, teens have no sense of humour nowadays).
Our daughter on the other hand had her hair shortened (fortunately not too much) on Christmas Day to look more grown up. - After which she admired herself for hours in front of the mirror.
And I had Darth Vader-hair as a child. Because of my ears the hair went out in sort of a slight angle over the ears. - It may have been fashionable at the time but in hindsight it wasn't something to write home about.....
So the conclusion must be: If a boy, or if in doubt cut the hair short.