Douglas Adams' contention is that God is nothing without faith, and that is why He allows no convincing proof of His existence.
Perhaps that is backwards. Perhaps it is we who are nothing without faith?
Douglas Adams is wrong, but that’s no surprise from someone who hates God as clearly as he does.
God goes out of His way to prove His existence and give us reason to trust Him. Scripture is loaded with stuff about proving He exists (post 216) and letting us know that it proves He exists.