People will have to remember that faith doesn’t necessitate proof. All of the conviction you hold over Brahma’s existence, Buddha’s principles or belief in Saṃsāra will not render it true.
Nor are you sure that I am the King? Right, you may not know that.
Exactly, belief isn’t evidence of something.
I do promise you that God said the earth will be a nice place someday. So I give you that optimism, I hope.