Well the best part about fetish's is that they always evolve into new concepts. For instance at one time I was really into studly guys but not military specifically. Then I found the mil niche and merged the studly and the mil and now have a new fetish. I dont think people "age out" of interests, I think they take the old interests and combine them with new interests. I do know men that at one time were really into the Daddy niche but now that they are 40+ they are into the boy niche..now these are 2 side of the same coin but its interesting to know that they just switched interests becuase they got older.