my late father was a dub for 50+years.
i left the cult in my 20's...but he ( and mom) never shunned me. mom tried to get me interested in going back at one stage..but then gave up and left me alone. she died 20 years ago.
over the next few years, dad and i sometimes discussed specific cult subjects..and i do believe he wasnt at all convinced with some of it.
but the thought of being with mom again in the brave new world swayed the balance of belief and he stayed a dub. but his last 3 years in a care home saw visits from dub friends dwindle to nothing. i would have taken him to the memorial thing if he had asked..his grand daughter and her husband never went near him or offered to take him to meetings. i think towards his end he was a very embittered man. i was by then all he had left.