My favorite argument against Intelligent Design is the fact that the clitoris is located nowhere near the cervix — for women, reproduction and recreation are fairly effectively uncoupled. But that doesn’t stop some people from imagining the existence of a vaginal source of sexual pleasure, the G-spot. I don’t believe it exists; I do believe that individuals can be sexually stimulated by contact in all kinds of places, from vagina to toes to neck to belly-button, that it varies from person to person, and that you don’t need to find an excuse in sloppy anatomy to justify what makes you feel good.
But I also think it’s an interesting example of chance and contingency in evolution. It would optimize the likelihood of reproduction if women could only find sexual gratification by stimulation deep in the vaginal canal — they’d be more likely to encourage sexual penetration. But the homologous tissue to the penis in women is the clitoris, which is in a fine position for creative external stimulation, but less than optimal for stimulation during intercourse. It’s location is clearly the result not of selection for the function of encouraging female orgasm during reproduction, but as a byproduct of selection for males’ interest in penetration during sex (females have sensitive clitorises because males have sensitive penises), which does enhance reproduction.
So it’s a good article highlighting a weird masculine desire for the vaginal orgasm, but it also illustrates that a fortuitous feature of female anatomy isn’t there for baby-making: it’s there for fun. O happy kludge, I’m so glad you’re there.