I'm not saying people shouldn't talk about their religion if they're asked about it.
I had a similar experience about 4 years ago with a JW who knocked on my door. Thing is, I don't have a problem resisting their "charms" and I enjoy asking them questions that confound their beliefs. It's sport.I had a nice visit every month for a couple of years from a wonder JW lady. I had mentioned my Mormon upbringing and asked if I was willing to answer her questions (and there were lots of them) about Mormonism. I was happy to do that. I also told her up front that I understood that she was called to witness and that was fine with me. She learned more about Mormonism. I learned more about JW theology. More importantly, I got to experience getting to know a very kind fellow human. I was sad to learn that she had been rotated to another area.
What I'm talking about primarily is people making unprovable claims about reality (fine, whatever) and then trying to make everyone else live under their idea of what the law should look like given their unprovable claims (“F” off with that).
If someone wants to ask me about a god one on one, I'm all over that. It's always fun to discover someone's version of the god idea. You get to count all the unfounded premises. Good times.