Ofcourse dick size is a matter, I mean if they have a weiner 3cm long, your going to panic.
If they had a weiner like BELOW, you wouldn't stay with them. True?
I did read in an article one man had a penie size of 5 cm (flacid) and he had great sex, and his woman thought so too.
I guess it doesn't really matter. (IF any smaller than 5cm then IT DOES and I suggest having plastic surgery).