Is Sex a Need or a Desire?

Gays claim that sex is a need for them, but this argument has no foundation.
You must be able to differentiate clearly between a need and a desire.
 
Anything you cannot continue living without, such as sunlight, water, oxygen, is a need.
The things that people can survive without for many decades are desires.
 
Sex solely for pleasure or gratification is not a need; it is undoubtedly a want.
Bear in mind that people can in fact live until they get old without having sex.
 
You can only view sex as a need for procreation to prevent the extinction of creatures.
This does not apply to gays because they have same-sex sexual relationships.
 
When you have sex with someone of the opposite sex, there is a chance for procreation,
But when you have sex with someone of the same sex, there is no chance for procreation.
 
Sex is not a need for people who do not contribute to the continuation of human life.
Gays confuse desire with need, and they present this nonsensical reasoning.