Size only counts during the attraction stage of a relationship. A man is attracted to a certian type of person or physical appearance and the R goes from there. Once the R is in play and then not being attracted because of size is crap.
I agree that if you are hung up and being self conscious, then that is not good for the R. My W is SC about her stretch marks from our kids. I don't really care about them. But her attitude is dissappointing and frustrating to me.
There are 3 sides to every situation: yours, mine and the truth. Knowing the difference is the key.