I think Gayle sums it up best...
Jehovah's Witnesses - not a generational religion, not meant to be, too hard to be.
This religion makes a lot of demands. Part of what made those demands tolerable was the notion that it wasn't supposed to go on forever. Hell, it wasn't even supposed to last the lifetimes of the people who originally joined.
I'll bet those chains are quite heavy after a few generations.
This has played out where I live, also.
Kids from strong witness families might stay in the cult, get married...but they aren't breeding. I don't quite get it. The WT, to my knowledge, hasn't in some time actively campaigned for young members to stay childless, so I'm left with the notion that they are choosing this on their own.
I was born-in. Of my peer group growing up, at least 1/2 are out. Of those 1/2 remaining in, 1/2 are having families. Not good numbers for the business. Given that the WT knows this, I often wonder if the magazines will start championing having kids and raising them in the cult. It's their best source of monied growth, right?
Of course, this will further discredit the 'end-is-near' mantra, but money talks.