Happy to know I am not a creep any more just because of my anal cravings...

Married European male, starting the second half of my life... in stable but bumpy couple for the last 25 years, we always had a good sex life but O and V only.
A few years into our relationship, during a trip, I just started assfucking her, out of the blue, it was not bad, it was not good either, I was disappointed, but she needed to take a dump just after all in all that put us away (we've got no scat fantasy whatsoever). So for years this remained a fantasy, until recently where I just penetrated her anally with a very wet duck. She got enthusiastic from the beginning and we do it almost exclusively anally after only a couple of months. There is a kink to anal, it is a dirty secret we share and that propped up our monotonous sex life!
Regarding announcing anal preferences in online datings, from my experience as a guy it is definitely a put-off: you present yourself as anal-oriented or interested, and poof! the women disappear.