It has been shown by many scientists and research agencies that men are more involved in gambling than women. In the end you have to have a lot of money at your disposal, otherwise you will not get there. And women prefer to focus on other things in life than on gambling. Women are more looking for stability while men often push the boundaries of life. I think that has to do with the amount of testosterone present in the body. Yet here and there you also see some women gambling in a casino. But more for fun than to get rich with it.