Acheela.
No disrespect to your position and I don't want to argue.
I think one of the underlying assumptions here is the acceptance that those that have experienced this are doing something wrong. Ex. Not enough food given, training by the pet that If they nibble on your finger you feed more. Ex. Reward.
I think that's a bad starting point. There can be other things perhaps.
I don't think folks that have never had this happen to them are in a position to venture out with judgements without the experience.
Folks like myself who've had it happen many times can't also discount the experience of folks who never have had it happen.
Factually you can find MANY youtubes of it happening.
Why it happens is a mystery for me I've tried to figure out with no success.
I assure you I have tried all manner of things to stop it from happening.
Fed to excess from the time they were hatchlings. Got giant yearlings and bloody hands.
Handled frequently and let them continue, hoping they would get over it so as not to reward the behavior. Still blood.
Hands washed before handing. More blood.
Avoiding any stimulating hand movements to provoke a bite.
Some of the more disheartening ones where animals that had never done it and while being handled just started to chew.
From spending time with a lot of Eastern Kings, I will tell you they are awesome intelligent animals that are feeding machines and I think may just have high aspirations.
Every time I see that Gary Larson carton where the two spiders are putting a web at the end of a kids sliding board and remark gleefully to each other that if they pull this off, they be set for a long time! , it reminds me of Kingsnakes.

Anyone that doesn't believe it happens regularly to folks can pretty much look at Chewey and Brian on [ban] on YouTube any time and see it. Clearly some of those animals are not handle other than for feeding but I don't believe that's necessarily the only/real reason.


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"If people are only good because they fear punishment, and hope for reward, then we are a sorry lot indeed." Albert Einstein.