I am a female in my 50s but I am sure some males will also post some replies. This seems like a totally normal fantasy to me. There is no reason to be ashamed of having a fantasy like this or masturbating.

I have had fantasies like this plus many others. You will probably eventually experience other fantasies as well. I find that if I don't orgasm on a regular basis, I feel "grumpier" and it is harder for me to sleep. I really enjoy when my husband helps me achieve this and especially when we ocassionally orgasm at the same time but when he doesn't "get the job done", I am a lot less frustrated if I masturbate. So I guess I am saying that I think some people are not as content when they go "no-fap". In my opinion, the need to orgasm is sort of "programmed" into many of us ensuring the survival of our species. After all, I doubt I would have gotten married and had two children if I didn't enjoy sex. I am less depressed and can concentrate on other things better when I satisfy this need.