Historically, it's because men treat cooking as a professional skill and not as a life skill.
Get a job in a kitchen, start washing dishes, two years later you end up making Neo-Hatian Fusion Haute Cuisine 60 times per night, go home at 1 AM, and have a cheese sandwich and a beer before collapsing into bed. Wake up, realize you are out of cereal, eat two slices of toast, drink a glass of juice that is starting to go off-date, and then putter around a bit before going back in to work, silently checking off days until the weekend, when they can restock their own larder. At least, as long as they are either a bachelor or only dating a girl. In which case, they will cook to impress her. Because bitches love a man who can make magic in the kitchen, but you'll do it like, once a week and not something you do at work, because fucking WORK.
Women, on the other hand, if they do not find a *passion* to go into cooking as a professional skill, will treat it as a life skill, i.e. find as many shortcuts as possible because it becomes just another daily chore. That's why my mother's favorite recipes tend to involve dumping French Onion Soup Mix on things. Occasionally, rarely, she will spend hours making a super special meal, but it's going to be some single important element that eats up the most of the time: Grandma's perogies, oh god, I ALMOST can make them, but the recipe card isn't right, and i don't know what mom does...