now that birth control, female condoms, and abortion are readily available, things are improving, but women have many thouands of years of being trapped with kids, they are hardwired to be VERY careful who they risk having a pregnancy by, and rightly so. also, they are much smaller/weaker than us, make less money, etc, etc, so of course they have absorbed the need to be careful, sneaky, and so on. However, i have heard that studdies show that men typically think about sex dozens, if not hundreds of times a day, while a typical woman thinks about it not at all, or at most, a very few times a day. My experience backs that up, for women who are not 'involved" with a given man. however, one who is living with you, really digs you, or really wants to get pregant, can often be jumping your bones several times a day.