To feel sad and like the friendship is over due to flat earth belief

[UprootedSunflower]

Friend is a nice person. Comes across sensible, though has had a deepening religious conviction over the last 5-10 years. I’m Christian myself, but I’m talking a bit more fringe. We don’t talk about the fact she probably doesn’t consider me a Christian anymore. I ignore it.
But today I overheard her get really animated and happy in a flat earth discussion. She believes in flat earth. An intelligent woman who’s travelled the world and is from a country in the southern hemisphere. I’d certainly say she is educated and far from stupid.
Aibu in finding this a bit of a final straw moment for being friends? It just felt like something snapped inside that I could t ignore tbh when I heard her. I don’t feel like I want to expose the children, and I don’t feel I can keep the pretence up. It’s just a bit too far, and it feels like it’s gone over the edge.
Aibu, silly to give up on a warm and pleasant person? Or would you be drawing a line?

When it's related to religiosity, I have enough emotional intelligence and compassion to not consider it irredeemable stupidity. Because it's often a suspension of disbelief, indoctrination, cult-like thinking and vulnerable people who have often suffered some kind of loss or trauma in life and their beliefs give them comfort.

And i'm not going to be a complete twat telling them they're thick or cutting them off because of it.

@Vroomfondleswaistcoat

Greebo would just shag it. Whatever shape it was.

🤣🤣🤣🤣

And of course, everyone knew tthe world was round by the time of Columbus' voyage; the big debate by then was whether the sun or our earth was the centre of the universe. So the whole premise of the book is wrong. But it's still an interesting read.

PS, I wouldn't chuck a good friend if they thought the world was flat (Especially not one that knew about the elephants and the turtle).

ANd we've had this conversation before: https://www.mumsnet.com/talk/womens_rights/4298863-The-End-Of-The-World-Is-Flat

With things like this I always think the best advice advice is to just allow people to be wrong.

Just let them be wrong, no need for argument, you know they're wrong and I know it's hard to stop yourself but just let it be. If she's a good friend just move on and ignore it and don't discuss it. Even if she does say it you can just say "Oh ok" and leave it at that. It save a lot of stress believe me.

I Hadn't realised this thread was still going, and what lovely language/imagery there on the 13th, @VincitVeritas1

Speaking of horizons though, another thought occurred:
At sea level I believe the horizon's about 25 miles for someone of average height, and anything else also at sea level beyond that can't be seen because of the earth's curvature

So where do these loons think it's all disappeared to and how do they explain it reappearing when closer?