I mean, it's the phrase itself and that I can't escape hearing it.
I often say versions of stuff myself like "Dear God", "God in heaven" etc in other languages when I express things and react to stuff.
I cuss and swear like a cocksucking, shiteating dogfucker too in everyday conversations, so I wouldn't describe myself as crude or offended by stuff. Swearing over here mentions hell and devil a lot, so I'm not a stranger to popping off those ones, either.
It's just that phrase specifically in English that irks me as boring and unimaginative for being overused everywhere. Throwing that phrase in English during non-English speech just sounds more like aping stuff than a genuine expression. Vanilla is at a quadrillion Scoville scale compared tho the phrase.
Specifically that three-worded phrase. Not "Oh, God" or"My God" - I don't have anything to say about them. It's about the whole "Oh, my god" package.
I am sick and tired of hearing that one everywhere I turn or go.
That is the biggest factor in my annoyance with it. Can't come up with anything else, once in a while?
Shit tastes like chocolate compared to how it sounds when thw specific phrase "Oh my god" is dropped in English in a conversation that's not even in English by people who don't even have it as their first language.
I've reached the point where that phrase just sounds like a poor pop-culture reference than an actual expression.