If you stop thinking about sides as whole and start thinking about singular choices, it becomes easy to understand where do centrists come from.

I like tradition. I don't think it should be untouchable, but I think it should be preserved and continued overall. I dislike globalism, valuing feeling of community with people from my country. I hate the idea of bending backwards just to fully accomodate whims of other people, even if these pertain to their feeling of self.

On the other hand, I hate the idea of functionally sorting people based on their skin, using traditions to shame and attack others, or deeming others as worse just because what they feel themselves be is different than what we perceive.

I hate censorship from both sides, portrayal of the other side as dumb and themselves as better and tendency for "group-thing" for humanity as a whole.

So yeah, i deem myself centrist. But if you ask me to join the side fighting fascists, nazis or communists (in the USSR sense of the word), I'm with ya. In the end I need to choose what fits most of my views, and in USA case, that's mostly left. In my own country it's a bit more muddied.