Wow. I'd hate to be in a religion that thinks sex needs to go. What about enjoying sex equates to spiritual immaturity?
Your reaction is really interesting.
We're spiritually immature anyway. If we were Realised, we wouldn't be in this world.
Sex isn't bad, in fact it is important in a loving relationship.
The point is, sex desire, along with all material desires, evaporate when one becomes very close to Realisation.
You're looking at it the wrong way. The same way, in fact, as the person who makes a decision too early to abstain.
Sex isn't something that one
needs to overcome, it's something that is overcome in a very natural process.
If you still don't understand what I am saying, then I will put it again this way:
What binds us to the material platform of life is attachments to material nature. So as long as we have any attachments in this world, we continue to be born into it. There is nothing in my religion that says you should get out of this world. The path of realisation is for those who understand that this life is illusory and want to get out. Through spiritual practice, our Consciousness evolves and gradually, we are no longer controlled by the human condition.
Sex desire is part of the human condition. It is one aspect of our biology that controls our thought and actions. This relates back to the OP in the sense that drugs can also be controlling- if they make a person dependent on them for relief or pleasure, then it is one other tie to the material world. If a person wants out of here, they should not allow themselves to become dependent on drugs- so drug use is discouraged.