My aunty told me I don't need to call her or my uncle "Aunty XXX and Uncle XXX" anymore when I was in my twenties. I still do - that's what I've called them all my life and it's sort of strange for me to change that now. I knew people that called their parents by their first names but once I was in secondary school I went from "mummy/daddy" to "mum/dad" (and occasionally "Ma" said in a Nick Cotton voice to wind my poor mum up) and still do.My mum would flat out ignore me if I started calling her anything other than mum. And she's a bloody stubborn woman too, so she'd be in it for the long haul. She's still pissed off at me that I've stopped calling her sister aunty, and that my daughter doesn't call anyone aunty or uncle. It's one of those 'you do you' things isn't it?
https://giphy.com/l4FGkIQof6eeoNvnW