Supposing two things at the same time (that all your religious experiences and ideas were intense, very meaningful yet there was no God), how could the existence of God be accounted for by the existence of intense and very meaningful religious experiences and ideas?
Surely we can only say that there are intense and very meaningful religious experiences and ideas. That there is or isn’t a God cannot be known to change anything. Certainly too, just because we believe or doubt there are deity, that belief doesn’t effect the existence of deity; just what we attribute these things to.
Just a thought.