Well, you’re speaking for me here. I’ve never picked a penis out of a lineup and then checked out the guy. If so I’d be so happy with the plethora of dick pics I receive - I could pick my lovers based on the penises I like. Alas, I don’t. I get whatever penis is attached to the man I like.
And this brings up an interesting point.
I won't speak for all my gay brethren here - however, it seems to me that dick size is prevalent in gay society quite a bit. Its lampooned in culture, comics, and gay jokes. Size seems to matter to men more than women.
In my case, does it matter? Not overall, but it does - to a point. Some of you may recall that at one point i was married previously on here, and some others may recall that my ex was eventually unable to have sex due to medical issues (couldn't top OR bottom). The relationships itself didn't falter because of those issues. Not those alone - they did contribute - so I can't deny that, but I COULD have continued in that relationship.
I can't deny that I've posted that I am very satisfied with my partner's size (8.5x5.5). I can even be man enough to admit that it was ONE of the reasons I hooked up with him originally - though it was his personality that caught me entirely.
That being said - it could be that 'size matters' to women, it could also be totally not true. I don't know for sure as I'm not a woman. But its obvious that through culture, through humor, and through many other things that size does matter at least to men. It's all over the boards. There are plenty of 'are you bigger / thicker / longer' threads in the show-off section here. I can even say that it does matter - to me.
More than likely the reflected self importance men see in their own members is what drives the disbelief that size doesn't matter. It matters to them, so why shouldn't it matter to women. I have a suspicion that the above is the reason for the belief, and for the existence of this thread.