Are short men insecure dating women taller than them?

Hey guys, a 21F here!! When it comes to dating, I more often than not prefer a Short guy or a Medium height guy rather than a very tall guy(like a crazy 6'3). I'm 5'6 myself. And I love wearing heels so that rounds about 5’8. The shortest I have dated is 5'4 and I was completely happy with him. But many of my friends had this opinion that most men get insecure dating women taller than them. Do you guys really feel that way? Or are yll comfortable. Also you should be comfortable if the woman (like me) chose to wear heels. Because then it'd be a deal breaker for any woman even trying to approach yll :)