I left the Mormon church after about 40 years in it. I really dislike intensely everything about the church, including doctrine and culture (people are great on the whole, though), BUT I don't regret for one second serving my two year sentence. On balance, I had a great experience and came back a much more mature young man more focused and motivated, which contributed greatly to the later success I've had in school and in my career. The downside was that it took THAT much longer for me to break programming. The indoctrination one experiences during the mission is intense and unrelenting. If I had it to do all over again, no way in hell I'd do it, but having done it, I don't regret it.
I have areas of disagreement with the church, and my belief in God has been wavering for a decade or more now, despite my mission and all that. I would say at this point I am more or less agnostic or at least agnostic-leaning. I am still more or less active in the church, but I simply do not feel anything from it like I did when I was younger or like others claim to do.
I feel good when I get emails from my daughter talking about her mission, and for father's day this year she wrote me a poem that really brought tears to my eyes, but I don't view that as the workings of the "spirit".
After quite a long hiatus (a few years really) my wife and I went back to the temple to be able to escort our daughter through, and then attended several times with her, and I have made a real effort this year in particular to reconnect and see what might be there for me in this religion. But in the temple I really just felt kind of ridiculous. I get that it is all symbolism and I studied it enough earlier in my life that I know what that symbolism for the most part is supposed to be, but in the temple with the clothes on, etc. I just kind of felt silly, and none of it resonated.
I felt like I was there with an open heart, as I had been preparing to help my daughter have a good experience there, which included reading the BoM for the first time in maybe a decade. But all I felt was silly. And frankly I was disappointed that I didn't have the same spiritual experience my wife and daughter obviously did.
Maybe I am just not on the same spiritual plane, or, as the thought that occurred to me in the celestial room in the Salt Lake temple, maybe this is all window-dressing and really is just silly. I honestly don't know, which is why I feel I relate more as an agnostic than anything else right now.
I have had experiences in my life that I cannot explain, and fit religious explanations better than anything else I can imagine. Experiences connected to my cancer, things to do with my kids, and other things that are just too perfect to have been coincidence, including a near-death experience I have spoken of here before. And it is these experiences that I feel I cannot deny, that when I try to deny them I feel just, well, wrong inside, that keep me from leaving it entirely at this point.
Don't know why I went on that ramble, but it feels good getting it out in the open. I cannot talk to my wife about this, or my parents, or my children. I have few friends that get it, and I have broached the subject with a few and all I get is either "yeah get out of that brain-washing thing" or "you just need to pray about it harder" as the standard responses in one form or another.