No, and as far as I can remember I never have.

I should add that my parents consciously decided not to make me grow up with adult santa claus as part of my life. The idea was that once I'm old enough to decide (somewher 14-18) I can decide for myself. They haggled out a deal with my school where I was free to sit in with varying religious education classes to compare. Eventually having a chat, I was by then big time disillusioned by how little sense everything made, and while at the time I could not understand how my friends could take this nonsense as anything even remotely true, I also knew I could not takei t serious.

So, here I am. Still no adult easter bunnies for me. 😅 I mean, I get why some people find it a useful thing to cling on to in times of desperation, but then I would also say that that is no different than the grifts Theranos or homeopathy or so were/are running. You just milk money out of people's grief, desperation and loneliness. Because of how low the barrier of entry is to most of our religions (after all, our parents make us start with it by default 😢), the buy-in is so low that most people never actively notice this part. Maybe I had it easy, since I would have had to climb that barrier first.

Do I believe in any higher power in general? Well, no. A bit of a shame, I know. But I doubt the Twelve from Final Fantasy are all that real; cool as it would be to meet Nald'Thal or Menphina because of their kickass fight-themes in FFXIV.