Yes I do. I use it as an opportunity to warn people against bybs and purchasing a dog when you don't know the full history, didn't meet the parents etc.
Grace is the family dog from a BYB. She turned out wonderfully, both in temperament and health (generally, bar cruciate ligament that required surgery) and knowing what I know now I thank my lucky stars nearly every day.
Abby - goodness I was so naive when I bought her. I honestly thought it was all in how you raised them. I thought that breeders were fairly similar - except that some bred show dogs.
I fell in love with a photo and that was the end of it.
As I became more addicted to dogs in general - behaviour (through necessity really, having a reactive and highly strung dog of my own that I didn't know how to best manage/handle), training, health etc, I became more aware of ethical breeding issues. Temperament and health and how to best mitigate potential disasters is something that I really care about. Until I had a dog with 'issues', I thought dogs were all the same and it only mattered how you bought them up.
I'm not saying my inexperience did not contribute to how Abby turned out either. There are things I'd do differently and I would have addressed issues sooner rather than later. I really try to use Abby and our story to promote ethical breeding and rescue when I can, to anyone who is interested. Seeing that the message is coming from someone who didn't done the research and didn't 'done the right thing', I hope that when I speak to people I can connect with them. I don't know everything. I've learned a lot and dogs and dog people can teach you a whole lot if you let them!
Thankfully for us it all worked out ok in the end, but I'd so much rather that dogs didn't have to suffer and that no one had to deal with the heartbreak of struggling with and possibly losing a dog through temperament or health issues.