He's also a career man first and foremost unlike Riker who LARPs as a career man but stopped going forward as soon as he had a cozy position on the Enterprise
--having a waman to worry about would get in the way of his ability to command a starship. The one time he did try a serious, somewhat normal relationship (Lt. Cmdr. whatshertits from Astrometrics) it bothered him when she went on an away mission, so he broke it off. And as true as it might be that he's autistic about the opposite sex, he's managed to bag a good few throughout the show--about as many as Kirk did, I believe. Kirk only had half the screen time of course so he still wins out, but Picard was no slouch despite the memes.