I'm not big (6.5 inches) and I think there's some kind of relation between penis size and pleasure for both the partners and the reasons are at least 2.

First of all in some position my penis can go deeper inside my girlfriend and that hurts her, so I have to slow down and have a more controlled movement. On the other hands, in other positions I can penetrate her hard and steady without problem.

Second point I love when my gf deepthroat me, it's not just a visual stuff, I also feel something different, warmer. When the tip of my penis enter her throat I feel like it entered in another mouth inside her mouth. And feeling her lips on the base of my shaft is howesome. It's hard to explain but I love it.

So, despite the idea of ​​having a huge penis intrigues me, I always thought that If my penis was much shorter I wouldn't feel the first thing and if it was much longer I wouldn't feel the second thing.

What are your opinions?