Hello Tsevern: I noticed this is your first post here on PC. So... welcome to PsychCentral!

You asked if fantasizing about certain homosexual activities is normal as men get older. I don't know what you mean by "older". I'm 70! So what I perceive as older may be a lot different than what you have in mind.

I'm certainly no expert when it comes to anything such as this. I myself have also always been heterosexual. But I have also had a life-long struggle with gender identity disorder. And one thing I have come to accept is that there are many resting places along the sexual orientation (as well as the gender identity) continuums. The old sexual orientation (& gender identity) binaries simply no longer apply.

So with that thought in mind I would speculate that the thoughts you're having perhaps have nothing in particular to do with getting older. They perhaps are simply a reflection of the fact that you may not be as solidly affixed to the heterosexual end of the sexual orientation continuum as you imagined. And that's okay!

One other thing that occurs to me here is that one hears a lot more about these sorts of things nowadays than one used to. When I was young, anything related to sexuality was considered to be not a fit topic for discussion. (And most people didn't even realize there could be such a thing as a gender identity issue.) I myself have certainly learned a great deal about these subjects in recent years as a result of the openness that exists now. Perhaps the thoughts you're having are also, at least in part, the result of exposure to information & ideas that in years past would not have been readily available? Anyway... it's a thought.

I hope you find PC to be of benefit.