No idea, but a lotta the guys on this site say they've faked it lmao so apparently it's a lotta ppl. Lots of women cant orgasm through normal sex though so I know that tends to be a really big reason.
Yea that too, because it's hard for me, but as I got older I still want them to please me otherwise why do it? So I learned to teach then to do other things to get me there.