Why do flat Earthers still exist even though it is scientifically proven that the Earth is spherical?

Read also:

• New COVID variant linked to painful ‘razor blade throat’ symptom - San Francisco Chronicle
• Why are so many US conservatives in this day and age still against racial mixing? They won't say it in public, but they are still against the mixing between Blacks and whites? Why?
• Why is my ping so high in 1 Roblox game but not the other ones? I am also not laggy in my own private server. What is happening?
• Why don’t Jews regard Jesus as an important teacher or rabbi, if not the Messiah? Putting aside messianic claims, wouldn’t Jesus be one of the most significant Jewish teachers in human history?
• Why are German films often so formulaic even though Germany is a European culture? I love them but they follow formula very closely like Hollywood. What are the best German films?
• When I buy a house, do I automatically own all items the previous owner failed to remove from the property?
• What, when building a house, are the necessary wires (beside 120v) to future proof my house, Cat6, Coax, low voltage, and alarm wires?
• Answer me this. These days guys love anal sex right, if you present them with your ass they will happily nail you into the ground. So why do some guys think it's "sissy" to let women stick a finger up their ass?
• Am I the bitch for never wanting to talk to my sister again because of something she said while talking back to me?
• Which is the worst Bollywood movie you have ever seen and why?