My mother joined the Baptist fundy church that nearly destroyed our family when I was about 9. I remember her trying for years to drag my father to church and screaming at him about the horrors of hell and how he was going to go there if he didn't believe in her new found version of God. This caused HUGE fights because he wasn't really interested in God and had been raised a Calvinist, so he thought that if you weren't chosen to begin with you weren't going to heaven anyway so what difference did it make.
I remember my mother as being a fun loving, happy person before she got involved with that church. There was a line of demarcation where she joined and then became a totally different person. All of a sudden everything was RAPTURE, RAPTURE, RAPTURE, trumpet, trumpet, trumpet, new heaven, new earth, sin, sin, sin, etc.
In her defense, she had never graduated high school, didn't know a thing about science (even the basic stuff) and had no critical thinking skills whatsoever. She was very vulnerable to pretty much anything religious that anyone could come up with, it just so happened that the end times rapture stuff was what she latched on to.
If you think about it, it makes perfect sense. She was a happy person, but unhappy in her marriage, didn't have many friends and wasn't very educated. Here came these people that 'loved her', had all the answers and they were easy answers and not too hard to understand, and also they sent her to Bible classes and made her feel smart about knowing all this 'insider knowledge' about the rapture at a time when she had been upset about not finishing school and having dropped out of secretarial school.
Anyway, I understand what you're saying about how a lot of it never made sense. I used to think the same thing to myself about a lot of the rapture stuff my mom would talk about. It was just flat out insane.