In all seriousness.
But for real.
If people wanna believe in a flat earth well, it's a free country, kind of, so we can believe whatever we want. The president believes windmill noise causes cancer.
I believe the earth is a sphere because it's what I've been taught and what I have learned throughout life, which could all be a big lie. I try to use common sense. Sometimes I'm wrong.
Would be the biggest hoax of all time to find out space, the planets and the universe is all fake.
Could you imagine the fukkery?