I'm married to a tinder girl now so say what you want about that but for me, it was fear of further social ostracization. I always struggled to fit in, in grade school because I was asian in a sea of white kids. Some kids were literally afraid to touch the "chinese boy" (i was korean but try telling that to rabid white elementary and middle school kids looking for any reason to other anyone). I became a huge people pleaser and tried not to stick out for any reason. I had also seen how the "popular" kids treated any of the geeks who tried to shoot their shot and I didn't want to fuck up any of the social capital I thought I had. It obviously got better in late high school as kids grew up but the damage was done. I had a few girlfriends in high school and college but they mostly came after me or we kind of just found ourselves getting close so there wasn't any formal "asking out" type of stuff. Either way I probably blew a lot of romantic opportunities but it is what it is.

I got a boy due in June so hopefully I can instill the confidence in him that I didn't have.