Bob in this analogy clearly exists. God however does not exist. A non existent being cannot want anything.
So, you know that God doesn't actually exist...
How?
The bible says that he inhabits eternity and holds the entirety of the cosmos in the span of his hand.
So, since you apparently live in time and space and in comparison to the size of the cosmos are like 0.000000000000000000000000000001% of the entire universe, just how do you think you would be able to know if God existed, without God making himself known to you?
Do you possess all possible knowledge of everything, inside and outside of the universe?
For the sake of comparison, a 6 ft person in comparison to the universe is 1.467E-25.
So, take a 0, a decimal point, and then 24 zeroes to the right of the decimal point, then the 1467 at the end of all those zeroes.