I agree there's likely genetics involved too- as long as BPs are bred (& sometimes inbred) for fancy morphs, & not for good temperaments, there's other characteristics that are also becoming "baked in". Much as I enjoy all the "eye candy" too, I'd rather have a snake with a good temperament ANY day, lol. IMO, no matter how pretty (or "valuable") some snakes are, if their personality is a "royal pain" I wouldn't be breeding them. But I think many do, just like with canines & other animals. Of course, in the WILD, your highly defensive BP might be the best survivor...she's just harder to live with as a pet.