Although most women probably answer this question with "Important is how you use it", most men will still ask themselves, if she is really telling the truth or if she just doesn't want to hurt his feelings. The key factors here are confidence and self-esteem, and men with a bigger than average - not necessarily huge - penis feel certainly more confident when approaching a woman. Studies have conclusively shown that males endowed with bigger penises are more successful in their sex lives. It doesn't come as a surprise that most of the men with bigger penises are more confident in their own power of seduction and in their performance in bed. Confidence is one of the keys to a successful sex life and is considered by many women to be the most important feature in a man, aside from the physical endowment. One could say that confidence is an adjunct of penis size in the game of attraction.
The psychological benefits of a larger penis are the high road to a better sexual performance - increased stamina in bed, increased control of your ejaculation, longer sex sessions and more pleasure for you and your partner. So the honest answer to the above question is: yes, it matters to You, because a bigger sized penis can mean more confidence, more self-esteem and - great sex. If you want to find out how to measure your penis correctly and what the average male size is, have a look at the article about penis measurement.