[Always *]

Its the same way that I choose to NOT believe in anything because of the fact that I have no way actually knowing that it exists. But for all I know i'm going to die and be like oops. I consider myself to be atheist or agnostic or to believe in aboriginal stuff (first nations though, NOT polynesian or maori). For me if I die and that's that it's fine, but if I die and go to heaven then great. I can't prove what's going to happen until I die and even if people say they've "seen" good I'm more likely to be like "oh that's nice....."
What you believe largely has to do with your upbringing as well and what makes the most sense to a person. So even though people can't see God and heaven or hell they believe it's there.