Married people do masturbate. Let’s just get that out of the way at the front. The idea that marriage fulfills all sexual needs, and that married people have no need to masturbate, has been pretty thoroughly destroyed by modern society. Married people do, in general, end up having more sex than single people, on average. And numerous studies do show that being single or newly divorced often predicts an increase in both porn-watching and masturbation (mostly in men).