Sometimes they do.

But usually yes, people who become Nazis (or similar) are not very inventive, not very creative, don't have sense of humor and consider themselves (and some majority they imagine) incapable of those, and those capable - weirdos\geniuses\miracles and such.

Which is why their instruments of choice are violence and scams - they think they can't do anything else. This also excludes really brave people who consider themselves incapable - because a brave person doesn't have to believe in having some talent to try again and again.

It's sad really. But at the same time inspiring, since it means that the better we can educate people (or at least teach them bravery, and bravery can be taught) and the more opportunities for development we give them, the fewer Nazis (or similar) there will be.