Late to the party but FWIW I used to be an atheist and then a Buddhist and am now a Christian...
My attitude is very different from the evangelist’s, it says “look that was an important part of my journey and if that’s the direction you’re going, don’t let me dissuade you. I can tell you why those didn’t work for me but I can’t hold up my present consciousness as “the only correct thing, believe as I do or else you are irrational or anything like that. Heck I am sure that we are both irrational in innumerable ways and why would I pretend I’m more sane than you?”
This fatalism also infects a lot of how I teach things like physics, I tell people a lot that “learning is pain—or more precisely, learning abstractions relieves a pain and chaos and difficulty such that you can only truly absorb the abstraction when you have felt the confusion it addresses. So I can no longer pretend that ‘now that I have suffered through all of that, here is the Right Perspective so that you don't have to!!’... I’d have to take you through the suffering to get to the teaching on the other side.”
My attitude is very different from the evangelist’s, it says “look that was an important part of my journey and if that’s the direction you’re going, don’t let me dissuade you. I can tell you why those didn’t work for me but I can’t hold up my present consciousness as “the only correct thing, believe as I do or else you are irrational or anything like that. Heck I am sure that we are both irrational in innumerable ways and why would I pretend I’m more sane than you?”
This fatalism also infects a lot of how I teach things like physics, I tell people a lot that “learning is pain—or more precisely, learning abstractions relieves a pain and chaos and difficulty such that you can only truly absorb the abstraction when you have felt the confusion it addresses. So I can no longer pretend that ‘now that I have suffered through all of that, here is the Right Perspective so that you don't have to!!’... I’d have to take you through the suffering to get to the teaching on the other side.”