Originally topic name should sound «why man gamble more than women?», otherwise it sounds that men prefer gambling over women
Anyway. I dont know where it comes from, but there is not sex difference in gambling. Both men and women gamble. I wonder where you have seen that men gamble more than women? Sports betting is more popular among men, but take slots, they are often occupied by women. Take Vegas, everyone gamble there, not like there are more men there than women.
It might look that men gamble more than women if your visit your local small casino. But that is only due to men, that are there, being lonely. Lonely women spend time at home, lonely men, everywhere, but they can be spotter at the casinos. Also men and women have fun differently. Company of men can go to casino to have fun, but women go to SPA. And it does not make that women are the only one who loves SPA.