CuriousGirl said:
See it's descriptions like this that make me wonder how many people really enjoy sex. Particularly the word "technique"; makes it sound mechanical, sex should never be 'mechanical'.
That's how these guys approach everything, like a technical problem. Same for the seduction process itself. It's not saying hi to a girl, it's an "approach". It's not putting your arm around her, it's "initiating kino". Too much sci-fi.
As for the original question...you have to be in the right range for her to enjoy it. That's all. If it's too small, you're not going to be able to get good penetration. If it's too large, it'll hurt.
The point is that if yours is the average 6" and she meets another dude with 9", she's not going to dump you for him solely based on cawk-size.
There IS something gratifying ego-wise about being able to sling some heft, though.
The ideal size is the one where you can smack her in the face with it by just a quick twist of the hips. Too small and it won't gain enough momentum and won't give a satisfying smack. Too large and you won't be able to swing the weight.