It's not called a doomsday cult for no reason.Everyday is effing doomsday to them.
People that believe every new day could potentially be the beginning of the "great trib" are basically scared $hitless.
The GB have basically said "the world is going to end and we are the only ones with lifeboats, if you want to be allowed on the lifeboat do as we say".
No wonder your wife is scared, we all were once.
The GB have made a very profitable business employing the gratuitous use of scare tactics,
and people who are scared are incapable of thinking rationally.
So how can I put this...Get a grip man.
I say this in the spirit of love.