Guess what?! You might have been joking, but this is not very far off the mark.

There are a few things that need to be understood in order to make this clear.

Neuroses exist on a spectrum (not an on-off switch), and almost everyone exhibits neurotic behavior to some extent. Who exhibits observable neurosis and who does not is decided by the interplay of two factors: psychological resistance to neuroses (stress tolerance, established by both nature and nurture), and the amount of stress a person is dealing with.

So, for example, a person with an extremely high tolerance for stress can still become observably neurotic if placed in a horrific situation. Likewise, a person with a very low tolerance for stress can become apparently normal if placed in an extremely safe situation.

In psychology, the tendency to attribute a person's actions to their internal character rather than the situation they are in is called the primary attribution error. It's the most common mistake.

Almost everyone is crazy if the world is crazy enough to make them that way. But, yeah, there is a good ~15% who are resilient AF.