Well some of us happen live outside of the US where true centrist options still exist. Additionally, just because the US doesn’t have a centrist part and one side has decided to go full Nazi doesn’t mean you can’t still be centrist. Being a centrist doesn’t mean saying both sides are at fault or finding a position between both sides. It just means your views lie somewhere in between the traditional left and the traditional right in either or both social and economic topics. As an example, I don’t support communism, but that doesn’t mean I dont believe in social safety nets.