Just Figured This Out Yesterday

I've been a bartender for years now, mostly dealing with all sorts of people and their stories. But something happened last night that really caught me off guard. A regular who's in his mid-thirties started talking about these weird fantasies he has involving strict authority figures. He was pretty clear it wasn't just the talk, there were real desires behind it. The more we talked, the more I realized there’s a part of me that finds this kind of stuff intriguing too. It's not like I ever acted on it before, but the way he described it made me curious. I spent most of today thinking about why this would appeal to me. Is it because I’ve always admired authority and structure? Or maybe it’s a reaction against my chaotic personal life that has no rules at all. Whatever the reason, it feels different from anything else I've ever been into sexually. Anyone have any insights on why someone might start liking this later in life? Am I totally nuts to think about it seriously?