[Hakulyte]

Let's prove that 2 = 3

1 + 1 = 2
2 - 2 = 0
3 - 3 = 0
2 - 2 = 3 - 3
2(1 - 1) = 3(1 - 1)
Remove (1-1) on both sides.
2 = 3
If you didn't knew that you couldn't divide by zero, you may have wrongly believed that 2 = 3.

No one wants ambiguity to happen. So, people hates on other people when they try to believe in things they can't prove.