Certainly, penises are important to sex, but great sex involves your whole body; in fact, having
great, mutually satisfying sex
is usually quite the opposite of what you see in those performance-oriented sex videos. Remember: Performance can be the enemy of pleasure and fun.
Like noses, penises all have the same basic shape, with some variation. Did you know that you can’t tell the size of a man’s erect penis based on what it looks like when flaccid (un-erect)?