I don’t have any issues with the erect size (although no matter how much you have you always want to have a little more). My issue is with the flaccid size (as I’m a “grower”). I’m a nudist and always wish that I had a nice healthy flaccid size that would flop back and forth as I walk around.
My wife measured mine when we first got together sexually. I'm 4 1/2" soft and almost exactly 6" hard, measured along the top. The thickest part of my penis (when hard) is about in the middle. The head isn't a large knob. We saw a guy at a nudist area get hard. His penis was 7-8" and never stuck OUT. only down at an angle. Gravity
As a teen I tried sucking my penis. I could get close. Only managed to squirt my cum into my mouth. I'd pay on my back and bend over as far as possible when I beat off.
I have no issues with the size of my penis it’s above average and haven’t had any complaints. Porn makes it so men have issues with their size.
For me its psychological. At 6.5" I know I'm not small, never had complaints but my wife found nicely hung guy for most of our MMF adventures. That left me feeling small, she didn't mean to do that but that's the way it went.