I have to disagree with the thread starter. Yes being insecure is a little in the head, but it looks like you didn't meet the other side of girls which will openly brag about how her ex ex bf had a 9" and you are not enough, specially if -talking about myself- under average, just a 4.5" or so....I don't think this insecurity is only in the head but it is clearly symbolized in reality as well.
And well, I love how some women just talk about "hey you can be a good kisser and a good fore-player to make up for your little dong"...You know what? From my experience, it's all BS....If you put a dude with a 5" and another 8", trust me, not the world's best kisses and Dildos and vibrators will work for the 5" to make him more advance to a decent 8" dude... It's just, foreplay based sex is like telling a girl I will masturbate for you rather than I have a penis for you...it gets boring over time...and 99% of time she won't really stand it.