Given that I've been that awful thing, an agnostic/atheist, (depending on the phase of the moon) since I was 13, I've wished for social reasons that I could find a concept of God that I could believe in.
And I've told religious friends, observing that religious faith is a good, in that it comforts or strengthens the believer, it would be nice to have the assurance that believers tell me they get from religious faith.

BUT! When someone says "God is everything" or some such I find it entirely too simplistic to be helpful or even meaningful. I "tried that concept on" for a number of years, but it wouldn't work. If God is everything, he/she/it is nothing uniquely distinguishable that calls for a separate concept and name.

Also, it's hard (for me, at least) to think of a god who/which is everything as being a conscious entity. And, if he/she/it is not conscious of self, then he/she/it wouldn't be aware of us, to know or care whether we worshiped him/her/it.

Dave Oesterreich