I disagree that being a hunter means you're all or nothing with regards to killing all animals under the sun. (That I disagree doesn't mean I'm saying you're wrong. And my ethics or code - same thing. I like a good discussion... and this is a meaty topic. Bad pun sorry...)
"Killing and animal is killing an animal" and the hunt being a religious experience are IMHO exact opposites. Doing a job like working a bolt-gun killing cattle or helping a farmer sort out a gopher problem is killing an animal. No sport, no emotion, mild memories. (Ok, pink gopher mist would be kinda fun

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A hunt as I'd describe it is way more than just killing an animal. I haven't yet felt the adrenaline of the hunt and look forward to the deep and meaningful, memorable, religious as you've said, experience that it is. A bow hunter, a muzzle loader and city dwelling lever action shooting types like me each make decisions of how to approach the kill portion of the hunt - making each experience unique to themselves. The choice of animal is also critical to the experience. People choose different animals for different reasons.
I think that for me a fifth deer kill will be similar to a fourth or sixth kill (not counting the other benefits/detriments of a hunt like good or bad weather/camp etc) because overall the connection with nature and reward of harvesting of wild game meat is why I'm starting to hunt. So multiple kills of deer makes sense to me as each is rewarded by meals. I'm not starting to hunt because my guns, taking a hunting course, getting correct tag etc allow me to justify a kill. Just to kill for the sake of killing doesn't compute for me.
So lets say that someone decides they want at least one tag for each animal that you can get - like a collection. It wouldn't be my choice but I'm cool with that. Maybe describe for me (post a link to another forum?) the fascination of a second, third or fourth bear or cougar kill compared to the first? That's where you lose me... Do people have 5 bear mounts, 5 rugs? My assumptions of bear and cougar kills, and where I find the taboo, is hunting for sport, not use. I'm not saying I'm right, but other than pure blood sport, I don't understand the repeated motivation to kill a non-food animal, which I why I'd choose not to. If you happen to really like bear meat, and ate them all - then I have no argument.
Watch for it... I'll start a new thread... What do you do with your hunted cougar and bear? Maybe with some education I'll know what I'm missing and/or reinforce my beliefs.
Cheers.