If there is ever a lack of these feelings there is something wrong with you.
BTW, all responsible hunters should show some remorse after killing a deer,
You are simply projecting your feelings on others - and insulting them by saying if they don't feel as you do, they are not responsible hunters and something is wrong with them. Nothing wrong with sharing how you feel, but don't judge others for feeling differently.
The day I start feeling sadness, regret or remorse after killing any animal, will be the last day I hunt. For me, those are negative emotions and I will not seek negativity. I demonstrated my respect by striving for a clean quick kill.