The Curious Case of Mr. Johnson

I'm a high school teacher, mid-forties, and have started experimenting with DDLG in my personal life. A year ago, I began noticing an attraction to the idea of being a strict Daddy figure, something I hadn't consciously explored before. This summer, I started dating someone significantly younger than me who's into this dynamic. We've had several sessions where I'm very much in control and she takes on submissive roles. But I find myself questioning whether this is normal or healthy for someone like me. Am I the asshole? What’s everyone else doing?