It seems pretty strange to me that the idea of infinity and infinite sets was initially opposed by many prominent Mathematicians, even driving Cantor into depression. However, in modern days, everyone seems to accept infinity without any problem, despite the existence of many paradoxes like the Banach-Tarski paradox and the prisoner hat paradoxes.
I understand that modern Mathematics is largely built on the concept of infinity, and Mathematics has already become a "game of ideal world," and I am not here to oppose the idea. What I am confused about is that historically once upon a time the majority of Mathematicians opposed the idea (at a time where Mathematics was not yet built on infinity), even driving Cantor himself into craziness. It seems pretty strange to me why and how the world has changed to this current state, where anyone opposing the idea is labeled a "crank".