Are There Really "Nice Guys" You Won't Date Because of Their Looks?

Men are constantly complaining that they are "nice guys", but women don't want to date them because they aren't attractive enough. Is there really of plethora of "nice guys" out there who you refuse to date based on their appearance?

I'm very curious because they make it seem like no women (who they find attractive, at least) will match with them because they aren't 6'4" with six-pack abs and a chiseled jawline.