"ever stop believing something?"
Yes. God.
I thought God existed when I was a kid.
Didn't make a big deal about it (I think my biggest conception of "Heaven" is about what you'd expect from a 10-year old boy--"In Heaven I'll get to watch all the best baseball and football players play...and the Star Wars and Star Trek cats will reunite...and maybe I'll get to meet King Arthur!") but I thought God was real, at the very least.
And then...I didn't.
That didn't shatter my view of the world or crush me as a person...
Because what I wanted (what I think A LOT of people want out of God and Heaven, even if they don't admit it, that is, something after death and to see some of their fantasies realized) is 1. Silly if you think it'll ever literally happen and 2. At the same time possible in a secular sense--
Jackie Robinson and Babe Ruth will never play on the same team as Mike Piazza and David Wright--but I can still think about them all...their memory isn't going anywhere.
The episodes of Star Trek aren't going anywhere.
King Arthur, Odysseus, even Moses and Jesus--those legends aren't going anywhere...
So in a way, King Arthur, Odysseus, Moses and Jesus all do "live on"...
And while I could cite a Dead White Male Author, let's cite Freddie Mercury, that's always fun...
"Who Wants to Live Foreeeeeeeveeeeerrrrrrr?"
As Hamlet recognizes with Caesar "dead and turned to clay"--I'll day someday.
And my body will become dust.
And some of that dust will go here and there.
And the atoms that make up that dust will disperse even more.
I will be gone, but the atoms that were once me will make planets and stars (and maybe even 1,0065th Editions of Shakespeare's Complete Works!) ;)
Hitchens said it best--"I've met Shakespeare, in his works...meeting the man would almost certainly be a disappointment."
True of Shakespeare, true of Hitchens.
I never met either of those heroes of me, but I "know" each of them by their works, and carry that with me...and whether I pass my thoughts and feelings on to one person or a class-ful someday or maybe even thousands or millions or more in a book--
They will know me, pass me on, and so in thought and atomic form, I will be used and reused over time.
Given that...who needs spirit form?
So loss of faith didn't shatter me. Not at the moment (to be honest, I was most "shattered" by the idea the Arthurian Legend wasn't true than the idea God wasn't true, and God and Judaism was supposed to be my religion!) and not now.
I think it has made me stronger and, on the whole, better.