Patrick asked "Why is it so much a part of our lives?" The answer is complicated, with as many variations as there are men in the world. For most men, it's not enough to simply have a cock; it needs to get hard, it needs to be big, it needs to measure up to the next guy.
Some men are "showers" - good-sized in the flaccid state and don't enlarge that much with an erection. Others are "growers" - small when soft, but they gain more than double in length and girth when hard.
It's very difficult for many men to accept what they have.
Competition will be with us forever. But a man should never have to feel like this:
In the Manhood book, some of the guys admit to sneaking off to "fluff up" a bit before exposing themselves in a locker room and gym showers,
and then they'll look at the other guy(s), look down at their own cock and still wonder if they're big enough.
Contrary to what many people think, cock size issues don't stem from porn. We've always been obsessed with measuring and comparing our results to other men; always been in that competition. It's hard-wired into our psyches because we must compete to reproduce. That's how important our cocks are to us. That's how important our boners are to us.
I dare say, we have more issues based on the size of our cocks than women have with the size of their tits. One man in the study said, "At least women have options. They can get surgery. There's nothing a man can do about the size of his dick."
And the importance of it doesn't wane with age.
How important is yours?