I have some distant relatives who decided to become M many years ago and of course I was invited along to their services. This was while I lived in the UK. One of them became fairly senior in their local group and one of the younger members did a tour of evangelizing in the US. That was my first real contact with Ms.
I have had Mormons call on me many times since and I have usually invited them in for a chat. Fortunately they won't drink tea or coffee which is good since neither do I. One couple thought I was ripe for conversion and insisted on about 10 repeat visits. That was really quite interesting. But they were really shocked when I didn't break down and cry at the end of all their emotional preaching, as that is what usually happens, so they said.
More recently, last year, a couple called but it wasn't a good time so I made an appointment for them to call back at a later specific time. And I did tell them I was atheist first. I didn't expect to see them again but they did come back and we had a very nice chat. They clearly were not equipped to deal with my, very polite, enquiries and questions, and of course requests for evidence and verification. And they left looking very confused. I hope I did some good and made them reconsider their claims, but probably not since they were young and totally brainwashed.
I now have two BOMs. I have the second because I couldn't find my first version when the last visitors called so they insisted on giving me another, sigh!
When I studied the history of M and how it effectively started with a confidence trickster I found I couldn't believe how so many people could be so gullible and naive to believe in this total gibberish. I still feel that way to this day. Totally unbelievable.