They stay single cuz well, walking up to a chick and they either already sweating bullets or pre cum in their tighty whities.
Because when it comes to dating and beyond, some don't have what it takes.
Like no one teaches you this kind of stuff.
For me, I'm no longer lonely. Have gf? Free sex to one. Have no gf? Free sex to plenty.
Not that hard at all. It is all about me wanting or not.