you don't need that if you are on a healthy diet and exercise regularly. If you are real small, way below average - consult your physician. There are surgeries to fix micro penis, which will help with functionality and esthetically. No need to be ashamed, this is okay and this also helps in case of unfortunate injuries. You do not need this if you are healthy, slightly below average or average. The rest is pure ego and don't watch too much porn by the way. Up to you, dude. Whatever floats your boat, this is your health and money after all. Big does not equate to better.