why is it? ewan ko sayo sarili mi yang paniniwala.
do spiritual world or heaven exist? no one knows, if u think there is then go prove it but if u can't, we atheists can only take it as you, getting high with weed.
Bakit may hindi naniniwala sa diyos? On my part, I don't believe because a belief with a very fcked up way of establishing itself is not worth believing. And, I am not convinced of God's existence, see the world, I don't blame God, my point is, if there's really an All powerful loving God, the world shouldn't be like this but since the world is already like this, it's more preferable to think that no God is governing it.
Do atheists believe in spirit or ghost? Yes there are and they are a lot. Take Buddhists as an example, they don't believe in God, hence they are atheists, but they believe in spirits or ghost, and performs rituals and other chuchus. If u got more inquiries abt Buddhism, google is a click away.
spirits aren't proven true and I haven't encountered any of those lifeforms, therefore I don't believe in spirit.