Mostly because we are not on the Right!
There is an ideological component. No matter how much they try to deny it, you cannot get around the fact that conservatism is a basic way of looking at life and the world. It is a deeply felt philosophy that cuts right to the heart of one’s soul. I have had a number of commenters pushing the basic philosophy of conservatism at me, and that made me realize that I am not a conservative at all in any way, shape or form. I disagree with conservatism at its very essence, at its core, at is essential character. If conservatism repulses me, I must be a man of the Left because I hate the Center. A centrist is someone who thinks the Republicans are too conservatives and the Democrats are too liberal! Forget it!
I am indeed a man of the Left, however, we are looking at an Old Left going back to WW2-early 1960’s, which also lines up with the liberal-Left politics of many working class Whites during this era. We can go back even further to the Old Left of the 1910’s-1930’s. I am quite at home with these people.
I am not a conservative and I will never be one as long as I live!