I'm guessing we're talking size of penis in regards to vaginal penetrative sex? Technically it shouldn't matter because science says all or almost of of the pleasure points (nerve endings) are at or near the entrance. Of course sex isn't all science. The brain is an importantant sexual organ I had a female friend, strictly a friend so she had no dog in the fight, who said that size did not matter. On the other hand a couple of times at clubs I've had women who seemed to be doing hands on comparison shopping so I'd guess size mattered to them. Anyway I guess my opinion is that size matters to a degree... to some
I wonder why the question of size in women never comes up