I think that could be because of the raunchiness of it. When I am having PiV with her, I feel romantic, there is a mixture of feelings, it's cozy and there is always a sweet pleasure.
Anal is something where it takes time, patience and intimacy to build up, and from there on there is no limit to the pleasure. So it feels more "earned".
And yes, there is always a good fuck in having vaginal sex, like when we're having sex, it feels warm. Feels like her vag is providing soft comfy hug to the dick.
When the dick is hard as metal, ain't no warm cushion can pleasure it. But the tightness of an ass can.
And fucking an ass has a dominance that it feels like taking control and "fucking". Not sure how to describe the word any better
Limited use of my vagina keeps it tight so, I feel more “pure”. That’s a benefit of anal as well.