I guess I should answer my own question, too.
When I was a child, I had beginners luck with breeding bettas. Breeding them was almost as easy as breeding guppies, but the surviving fry never grew as large as their parents. I stopped breeding then because I did not like gimpy fry. I guess no one told me they needed baby brine shrimp or to change their water daily. This was before internet, and nothing was at my library on the subject. I wish I had known about the IBC then! Before I started breeding bettas again, I bred paradise fish for awhile, clownfish for a while, and corals for awhile. I started keeping bettas again in around 2007. I started breeding bettas again in 2009.
I'm not sure why most betta breeders seem to get the 2 year itch to stop breeding. I guess if you are spending too much time in a fish room taking care of fish, the people who care about you let you know.