What is the reason for the great chess divide?

My friend is an avid chess player. He has always been interested in playing chess for as long I have known him. He says that about 95% of the people he knows that play chess are men and only about 5% are women. If their were more women chess players, I think he would have found them. Why are women no attracted to playing chess?|||Too mathematical. Same reason women read more books than do men, they are more into literature.|||yes