I think I started using masturbation as a comfort mechanism and way to fall asleep when I was about 12. For YEARS, I masturbated almost every night at bedtime, it was the surest way to make sure I’d fall asleep. In the past few years I have stopped doing it, mostly because of factors of my D/s relationship, but I have been thinking lately about how I miss it and how it was a comfort for me that is completely different from sex with a partner.