Because getting driving license takes a lot of time these days, and if a man doesn't have extra motivation to do it, he likely won't give a shit, because there are more interesting things to do. Women and NPCs are more disciplined at that age, so they just take it by default when they can because they're programmed to follow a certain schedule in their lives and they have nothing else to do.
I knew some some who were driving cars without having a license and hoping that police won't catch them when they were younger. Gypsies do that all the time too in Eastern Europe.