Fascism and authoritarianism is something everyone thinks they can use, until it eats them.
Centrists think they can compromise with fascism to keep the status quo.
Right-wingers eagerly use fascism to get what they want and don't even pretend to give it up.
Left-wingers use fascism with the promise that they'll give it up once the revolution is complete, and then never give it up.
Fascism, like the One Ring, is power manifest. You want it to achieve your goals, but once you have it, it's almost impossible to relinquish that power.