Sex is an a Vital & most Pleasurable thing in once life. I think who is not setisfied in Sex can never be setisfied with any thing in this world. But it shud be enjoyed in a way that ur partner enjoys as well. So enjoy more & more of it & let others also.
Definately Sex is Necessary, As the Creator Have given Human Organs to use extensively and just not to hold or display.I cannot understand which fool has developed such question .