This question is asked over and over again. Countless jokes are made about the topic and people spend lots of time and money trying to make their penis the "right"size, usually meaning bigger. The bottom line is this: it matters to some people and not to others. Some people prefer their male partners to have large penises and some prefer small. Mostly it matters as some cultural concept that men should have big penises. The average penis size according to the Kinsey Sex Institute is 6 inches. Penises can range from one inch to over nine, but most fall between the five and seven mark. The fact is that you have the penis size you have and nothing, despite wide ranging claims, is going to change that fact. So, this is a self esteem issue more than anything. Your personal pleasure during sex probably won't vary too much no matter what size penis you have. If your partner is dissatisfied with your penis size, you may want to think about getting a new partner. Of course intercourse, vaginal or anal, is not the only kind of sex people have. You might try introducing sex toys to enliven a complaining mate. Occasionally men complain that their penis is too large and that it hurts their partner. Really the same principles apply: perhaps your partner isn't a good sexual match for you, perhaps you can try other sexual techniques or perhaps extra lube. Men need to find ways to appreciate whatever size penis they have and to find sexual partners who will appreciate it as well.