I get it, I do.
For most of my life I've been ambivalent about head. It's so incredibly rare to find someone that makes it good.
But holy hell, when someone does? I wouldn't trade vaginal sex for it, but I would miss it if those people most stopped while I was with them. I mean, my first experience with head had me literally climbing walls, tearing down curtains, and breaking furniture. Hard to live up to, and there's only been two other people that could get me to orgasm via oral. None if the others really worked..
Part of that is enthusiasm. Someone who's really into giving head is going to be better than someone doing it because they think it's the done thing. Someone that loves sucking your cock is going to better than someone that treats it like a calling, but when the two collide? Hell yes. Absofuckinglutely!
You're right though, the structure of the sucker's anatomy is a limiting factor that is impossible to work around