If you're not from the US maybe not tipping is understandable.

If you are from the US and you don't ever tip, you're an insufferable jerk, on the left or the right.

You could also out avoid situations that require tipping. Like using the grocery store salad bar doesn’t require tipping, so eat lunch there rather than going to a local restaurant.

I avoid fast food places that require tips also, it just seems weird to me. You can choose where to spend your money, it’s not misanthropic to just opt out.