If I don't get to have sex be a part of my life, I struggle to see why I shouldn't just kill myself.
I don't care that "there is more to life than sex". There is more to life than drinking water, but if I don't drink water, I will die. Living without sex may not kill me, but it certainly condemns me to eternal misery. How is that any better?
Lifelong sexlessness infects every aspect of life. Outside of sex and relationships, I am actually more fortunate than most. But it is all for naught, because any joy or pleasure I would otherwise derive from those aspects is completely overwhelmed by the misery, anger and sadness I feel over missing out on sex.
I cannot think of a rational reason why I don't kill myself. I know why I don't: I hold an animalistic fear of death. But that is not a rational reason. I have no rational reason.
If I saw someone else in my position and they asked me to give them one good reason why they shouldn't kill themself, I could not give them one. What would I give them? If I was in their position, I'd want to kill myself too. Then I realize, I AM in their position.