Underage partners and bestiality are ethical issues. There's a difference between "it's a limit because it's illegal/wrong" and "it's a limit because I'm uncomfortable or don't like it." I don't think children or animals ought to be on the same poll as a bunch of legit BDSM activities, even though they are frequently listed as limits.
Guns, real knives, and breathplay are in my personal zone of "too dangerous for me to enjoy."
Guns, real knives, and breathplay are in my personal zone of "too dangerous for me to enjoy."