A spectacled cobra
These guys pretty much hit it on the head.
Herpetoculture is all about experiencing reptiles and amphibians. It's about caring for, raising, keeping, and propogating these creatures. Just because an animal is dangerous doesn't make it no longer worthy of experiencing, it just means those experiences must be much more controlled than draping your corn snake across your forearm.
There is no difference in the questions:
"why would you keep reptiles?"
"why would you keep snakes?"
"why would you keep venomous snakes?"
"why would you keep monitors?"
"why would you keep frogs?"
"why would you keep caimans?"
"why would you keep alligator snapping turtles?"
The answer is all the same, even if some pose various degrees of danger, or are less suitable for handling than other species.