I do agree with you about Letterman and Carson. I really haven't watched any late night TV since Letterman retired. And I am not in the DNC or any other party. Both parties suck. I find John Oliver entertaining and informative, you do not. Nothing wrong with that.
It'd just be nice if there was one late night show with a differing opinion or that didn't focus on orange man bad all the time. It just got lazy 3 years ago but whatever. It's subjective, I suppose.