I agree on that front. These days when I end up bowling it's usually at one of those newer hip bowling+drinks type places, which are generally tenpin. I haven't done enough big ball bowling to develop a technique or anything, but it's easy enough to roll them straight down the alley and get a decent score - it feels like the ball does most of the work.

This was my thoughts on why tenpin has taken over. The sense of some achievement without practice/dedication.