Why are the Abraham religions so interested in controlling people sexually

[Jefe17]

I think perhaps the intent of restriction of masturbation is to maximize marriages and birthrates by making it as miserable as possible to be unmarried. They want as many  Christians/Mormons/Muslims as possible.

Either that or god has no idea that not climaxing for an extended period of time gets uncomfortable. He must have lost the specs for human biological functioning somewhere.
Silly, forgetful god

This here. I imagine it was in general a way of controlling the population.

But I may have missed something, because I see theologians engage in mental masturbation all the time!