So when you cull snakes, they become feeders?
As long as you're not being wasteful in ending the animals life, I'm ok with your actions.
The attitude towards the hobby and your animals however is a little unfortunate. My reptiles are both my hobby and my pets. I care for them every bit as much as I have cared for social, cuddly, fuzzy, warm pets I have had in the past. They are not simply living art to me.