Young men are definitely FAR more driven. Where I used to work at the U of Ottawa, there was a series of steps leading down into a mini-amphitheater where young men, aged 14-19, used to practice their skateboarding wizardry every weekend. The dedication and time they put into doing those stunts over and over and over and over!! I marveled every Saturday/Sunday. Never a single young woman. It is true of many other male-dominated endeavors. A certain subset of men (not all men, of course--and no blame on the men who don't have the drive) are willing to put their entire lives on hold to pursue their obsession. There are a few women like that, but a miniscule number. I was fairly driven as a bookish only child who wanted to be a writer.