This thread was inspired by a video another member posted in another thread asking how we decide whether the claim of another is true or not true.
I think it's a pretty simple and straight forward question that requires no elaboration.
Why do you concern yourself with the beliefs or views of others?
It's a simple enough question, but there are levels to which the answer could be detailed.
My answers, for the most part, have very little to do with religiousness, or belief, and have much more to do with 'humanity'. People believe things, and hold world views which inform their actions. I've always sought to understand these, in a metacognitive sort of sense. Understanding people helps me understand myself, to some degree, and provides mental stimulation, and opportunity for growth. Whilst there is very little chance I'm suddenly going to become religious, that is completely different to whether or not I can learn anything from interacting with religious people, or in better understanding them. Some of the more impactful people in my life have been religious...whether I see their religions as 'true' or not doesn't change that.
But, like I said, it's not like religion is the lens through which I am seeking to understand the world. Philosophy, science, psychology, sociology, and...of course...basketball all have their place, and I consider each, albeit in a amateur and ham-fisted fashion. Each helps build my overall understanding of life and people.
In a more direct sense, though, I really don't much care what people believe in, as long as they couple it with a belief that others should be given the same courtesy.
Some of our beliefs directly impact on the world around us, though, and regardless of their source, I think we should feel empowered to discuss these, and argue/vote for those which impact the world in a positive direction.
Simple example would be that I favored marriage equality...whether their beliefs come from religion or not doesn't matter, but those opposing it were 'wrong' in my opinion. That 'wrongness' is unimportant when I'm living my normal life (for me, on this issue) but I don't feel like I shouldn't have an opinion, nor argue the case. Quite the opposite.