I used to feel this way too (as a cocksucker who seeks out big cocks), but I don't let it concern me too much anymore. I just don't think it matters with a sex partner (as opposed to a significant other). My feeling now is if a well-hung stud has a problem with me worshiping his size, it's his problem.
Anyway, it's much hotter when the guy feeding me acknowledges his size and encourages me to enjoy it. I like verbal play too and when my throat isn't stuffed full of dick, sharing a thought that is running through my mind... "Your cock is so fuckin fat" before you go down on it again.... nothing better than that. Likewise, hearing a big-dicked stud acknowledge his power over me is hot as hell.
I'd go even further and say, I've realized I wish I had a big cock so I could dominate men with my size... but I don't. And since size is very much equated with power (for me), I'm the one on my knees worshiping the big dick.
(Edit: Also, reading posts above me, I think worshipers actually make the best servicers. As one who had my own glory hole for years, I was very motivated to become skillful at what I did, because I want those big dicked studs coming back for more.)