Nothing unethical in mind. I have absolute confidence in the .17 Rem's ability (with proper bullets, in this case 25 grain Bergers) to punch a hole in a deer's vitals. I've seen what it can do to coyotes. I have a big elevated shooting house, and does will come out into the bean field and graze 40 yards away for hours. I'll have plenty of time to pick my shot.
As for "God's poor creatures," they're thick as flies where I hunt, which is a cornfield and woodlot in a suburban riverbottom area. The farmer regards them as pests, and his rules are somewhere along the lines of "if it's brown, it's down." (although he doesn't mind us passing on small bucks... he likes to watch 'em grow) He is the one who lets me hunt there, so I follow his rules. If deer were not so plentiful, I would probably have a different attitude, but my freezer already has two in it, and rifle season hasn't even started yet. I'll put one more in, then donate the rest to the food pantry.