I believe that many partners (possibly most) care more about emotional connection and/or your ability to make an effort to please them than simply physical size. I think it is normal to be insecure but possibly unwarranted. TV makes us think everyone is having sex but I'm not sure that is the case... in any case don't worry about what "society" says it is quite possible that everyone you know is in the same boat but just as afraid to admit it. Confidence is sexy.