Some Amish communities practice something called 'rumspringa' in which young people are permitted to go out and experience the world: use technology, drive, drink, etc.

I haven't read up on it in years, but I recall some communities having over a 90% retention rate. So in spite of seeing all of the conveniences (and vices) of mainstream living most young Amish return to their communities and make lifetime commitments to staying there.

They must be doing something right, eh?