Guys and the size of their private parts?

Seems I can't go onto YA without some guy worrying about the size of his . Really beginning to wonder what is up with this? As a girl, I can't recall ever worrying about whether my will be too small (or too large for that matter). Is it that you really worry that you won't be big enough? Or is it that you wish to be sowing this little seed in a girl's head so that you hope she will allow you the "opportunity" to see if our equipment is mutually agreeable to both parties? Girls, feel free to chime in here. Guys, don't get me wrong...i am not trying to be mean nor am i a guy hater...just trying to see what makes you tick.