My personal theory is that most women have difficulty reaching orgasm because their mates don't know HOW to make them orgasm. I'm still gathering data on that, though!
I can see that as a valid survival strategy. One part of the problem IMO is that the human race is short-circuiting evolution, allowing those with poor survival characteristics to survive due to artificial intervention (medicine). I'm not saying this is a bad thing, morally speaking. Just saying that it might not be in the best interests of the human race, ultimately. I certainly wouldn't want to set up genetic tribunals to determine who should be allowed to reproduce!The world doesn't stay the same, and no Alpha Male is perfect for everything. In Selfish Gene terms it's actually a better strategy for a female to breed with several different males, so that whatever qualities happen to be most useful to the next generation - strength, speed, cunning, a good thick coat - at least one set of her genes will be paired with that.