Arguments for and against God's existence. I'd like the negative position to take on an equal burden of proof and provide arguments against God's existence, e.g. the problem of suffering, divine hiddenness, etc.
So, christians obviously look forward to their time in heaven.
But how do they know it's real?
It's not like they can ask their deceased relatives what its like up there.
And its not like god is always telling mortal men how great it is
The fact that one can quite literally have faith in anything is a testament to it's sheer unreliability. We can have faith in both the true and untrue. We can have faith in the possible and impossible. For things we know to be true we can empirically prove they are true, and thus there is no need to hold them on faith. Faith seems to be reserved for that which not only hasn't been proven but things which are inherently unprovable. If we hold good reason to believe a truth then there will be evidence to supports it's truth. Rather faith is a good indicator of things in which we specifically don't have good reason to believe.
I would go so far as to say that faith actually is reliable-- reliable in detecting BS in the sense that if something is believed on faith then it is most probably BS.
"Technically atheists just lack a belief in god, they don't necessarily believe in the non-existence of god." Qoute from a debate here.
The trouble is that atheist don't just use this meaning, they act upon it. They attack God and religion, making atheism a religion. They don't lack a belief, they just have a different one.