In our late 60's now, I try and make the most out of my wife not wanting sex anymore. So, I do one or two things; I jack off thinking my wife is being an old ***** for other men with real cocks, so she's no longer interested in my old little 4" anymore. OR! I have my gay / sissy fantasies, then I love to jack off wearing my wife's panties and nightie thinking I'm a guy's GF! and of cause he's always horny for me to get him off. So, then I'll watch a couple having sex and imagine I'm the wife, or GF. OH YES! I think he's making it with me, and he wants to get off, he's so big and hard.
Then I can just use my straight up faggot fantasies, I have a few guys that I know and think about them forcing me to my knees and being their cock sucking asshole licking bitch. These fantasies always get me off so I can live with that, I just really miss not eating and smelling the wife's nice natural hairy pussy. When I eat her, I always would think I'm her cleanup cuckold, licking up the cum from some other guy that fucked her.
When I get lucky my wife and I will make out and she rubs me off through my undies, I can really get off on just that because I fantasize that her pussy belongs to a bigger young man.