I agree that even people who seem or want to be completely unbiased still have some on occasion. That doesn't mean they believe the bias, but it's just "built in", in a sense. I like to use the terms "nature and nurture" a lot. That applies to bias, too. We have to unlearn and practice losing some biases we've been taught and seem natural inherently, some part of our DNA.

I usually assume most members of forums like this are females. I do so mostly because I've been on such forums for years and most members are female. My built-in assumption is also that women tend to gather more for support and giving support more than men. There likely is truth to that, but it's really not fair to just assume that. Men give lots of support and ask for it, too.

I've come a long way over the years in terms of biases, and various views on things. Being around a variety of people from a variety of places certainly helps. Education helps, too.