I found out today that a breeder around here that I had considered buying a puppy from last year has an 8-year-old female that she's still breeding...on every heat.
The excuse was, "well she's never had a problem, and I figure she'll stop when she's ready."
This person has 7 breeds now (just recently added another), and LOTS of adults (I can't begin to guess).
Sad, so sad...