Its the deep and hidden desire to have virtual sex while being all that you in fact - are not, with "women" you could never have, and to hide this from everyone else. Understandable, and I get if people feel a little jealous of Geralt but you know, some pixels have all the luck.
Condescending much?
I didn't bring up the sex stuff, but it does undermine your point of Witcher being so very mature. If you state something so adamantly(especially here and about RPGs), expect people to disagree.