I'd be interested in hearing about how well you're treated as an ex-Mormon in the Utah community. I have only a few complaints about living in Utah as a non-Mormon. But I understand ex-Mormons get treated rather harshly.
When I first lost interest and began to stop attending, they mostly just wouldn't leave me alone. I was 16 at the time, living in Utah. The youth leaders and bishopric were always randomly showing up at the house trying to guilt me into going to church or attending youth functions. My bishop told me I'd never see my mother again if I didn't "get it together and figure it out" (she died about 5 years prior). I moved to another town in Utah with my girlfriend when I was 18 and they were always sending missionaries or local church members to our apartment, sometimes leaving pamphlets on our door when we weren't home.
There's a lot of story here I'm skipping here -- for example, I carefully studied the King James Bible cover-to-cover along with mountains of Mormon doctrine and writings -- but when I was a bit closer to 20, though I was still trying to figure things out for myself, I'd at least reached the point where I was certain that this church wasn't one I wanted to be a part of. Never mind the complete lack of archaeological evidence to support the Book of Mormon stories that were supposed to have taken place in the Americas, overall church history is quite disturbing and their founders along with many leaders and so-called "prophets" over the years were frequently disgusting people.
To get back to the point, the Mormon church keeps very detailed records of all its members and I wanted mine removed. After some online searching, I learned I had to send a letter to their HQ's membership records office requesting my membership records be destroyed, stating that I was willingly "resigning" from membership. This brought even more harassment: regular visits from missionaries, local church leadership, more pamphlets, and I received a response telling me that I'd be voiding my baptism if I went through with it, and that I was sacrificing the chance to spend eternity with my family.
I was frustrated so I was venting about it in an online "debate" forum I was a regular in, and a someone who was a civil rights attorney happened to read my posts and reached out to me. They drafted a very strongly worded letter template for me, I filled it out with my info, signed it, and sent it off. I soon received confirmation that my membership had been removed and records destroyed. The visits and harassment stopped, but also people that I thought were my friends, some even for several years, completely stopped talking to me. Some years later, thanks to social media I reconnected with a friend I hadn't seen in several years. We were chatting online and assuming I was still a member, asked me where I "served a mission" and he immediately blocked me when I told him I didn't because I'd left the church.
At this point in my 40s, though I once again live in Utah, it's a non-issue. If anyone ever has a reason to ask me about it I just tell them I'm not a member.