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

Read also:

• What does it mean when a guy says he doesn't want to ruin the friendship? Is he rejecting me or is there another explanation? Why would a guy choose not to risk the friendship if he has feelings for me?
• Scientists Stunned by Evidence of Ancient Birds Nested in the Arctic - The Daily Galaxy
• “Very Odd” New Sea Monster Identified After Decades of Mystery - SciTechDaily
• What is the best way to end a relationship with someone who has future plans with you?
• 10-year Treasury yield rises ahead of key jobs report - CNBC
• James Webb telescope unveils largest-ever map of the universe, stretching from present day to the dawn of time - Live Science
• Semiconductor Supplier GlobalFoundries to Spend $16B to Boost US Chip Production - Investopedia
• Reggie Miller Had Such a Fired-Up Reaction to Tyrese Haliburton's Game-Winning Shot - Sports Illustrated
• Why did Mark Lane harass Helen Markham during an illegally recorded telephone conversation to misidentify Lee Harvey Oswald who she witnessed as the shooter of Tippit?
• Is it true that people who are possessed by demons cannot see them until the demon is cast out? What is the reason for this?
• I am still studying engineering. I feel worried being an average student. Can I get a good job in placement, buy a house, and a car? I don't know why I feel this.
• Why doesn't California have the tools, people, means to put out these fires even though they know there will be fires every year?
• Why do men first look at a woman's chest instead of their face?
• What are the challenges associated with the birth narratives of Jesus?