Sorry I don't understand what you mean by "Because I see no material existence for religion". I see lots of religious material existence. Vatican City is material existence. Churches are material existences. Also, synagogues, mosques, etc.Yes. Because I see no material existence for religion, I see belief in religion as useless.
BTW, people in religions don't purport to believe in religions, they purport to believe in the basis for their religions. There's a huge difference.
Funny, even as an agnostic I can see a use for religion for some people. Even my atheist husband sees uses for religion.It had a use in previous ignorant, dark ages, but now, it is obsolete. So the state should keep it's distance from it. Religion ought to be shunned by modern people.
So?All religious books are works of fiction, as real as UFOs with as much physical evidence. Zero. Zip. Nil. Null. Nothing. Nada.