It's a very big question; possibly the biggest. The moment when you undress a new lover can be a moment of enormous joy or sudden disappointment. I remember an experience I had years ago with a male roommate that I really liked. He explained, probably a thousand times during our stay in the shared apartment, that he had a tiny member. That little piece of information never undermined my physical attraction towards him.
I've never really understood that there is a 'problem' associated with premature ejaculation even though I understand that the possibility of it happening has become an obsession for many men. For me personally, quick sex sessions are the most authentic, entertaining and certainly the wildest ones. In my opinion, the best things in life tend to happen quickly and this is especially true when applied to the bedroom.
There's nothing quite like having an orgasm. Just think of the amazing tension you experience just a moment before it's released by sudden spasms and groans. Then there's the exquisite sense of total relaxation that follows. I must admit that I used to think that women were either vaginal or clitoral as far as their orgasms were concerned. But I think our climax is not limited to two categories, there are many more.
"If you ever get a chance to test my orgasm under laboratory conditions, let me know" I told the scientist Pere Estupinyà when I first met him. I had just watched a TV documentary about sex in which a research team had observed and documented the physiological changes that occured to a couple when they had sexual intercourse. It fed my curiosity about my own responses during climax.