Size has never been an issue for me. Heart and brains is always the thing that draws me in the most. I think jennaflower's got it right, with size just grabbing attention out of surprise or disbelief sometimes...but I definitely think the elements of desire and mystery are present for some of us when we see someone who's well-endowed.

__________________
Though dreams can be deceiving, like faces are to hearts; they serve for sweet relieving when fantasy and reality lie too far apart.-Fiona Apple