Sometimes I think about it, but I realize the only time I think about is when I am turned on or I am in the middle of "certain two-person activites."
Then I think, do I really want to walk around with that all day? No thanks.
In my experience, my confidence is more attractive than the size of my penis. Girls will disagree with this, but only because the confidence is more subconsciously attractive.
I guess its like breast size too (or maybe not). I could care less, in fact I like much smaller breasts more than beach balls. But many girls I know seems to care about it, so whatever ...
Or we could go with this: if you have a small penis, you are a Marxist, Socialist, Communist, Maoist, anti-American.