Ok we are getting way off topic here let’s try and keep this about deer hunting, we are in the deer forum right? 
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Why do you need to kill it….if you don’t want it. Please help me understand your justification.
As deer hunters we all have different reasons why we deer hunt and that’s ok.
Some deer hunt only for the meat if it is brown it is down, fawn, doe, small, buck, big buck, it does not matter to them.
Some deer hunters will only shoot what they can eat themselves and not take extra deer to just give them away.
Some deer hunters will shoot one deer to keep for themselves and fill out the rest of there tags and give the rest away.
Some deer hunters hunt for the thrill and excitement of the hunt & the kill only and do not like or want to eat venison and give the deer away.
Whether we agree or disagree with all the reasons above of why we deer hunt all of them are legal, like it or not it is that persons right to hunt the way he chooses as long he obeys the laws.
Buckshot here is where I will attempt to answer your question, “Why do you need to kill it….if you don’t want it.”
You may not agree with me but that’s ok, what a boring place this would be if we all agreed on every thing. 
My answer will only apply to whitetail deer when it comes to most any other game I do agree with you that you should only take what you can eat, my only exception to that would be a species that is over populated like the snow geese.
Why do I deer hunt………..
I am obsessed with big whitetail bucks I admit that and there is nothing wrong with that either, however I get just as big of a rush from killing a doe as I do a big buck. I just plain love whitetail hunting, and I choose to practice selective harvest, I will only kill mature does and mature bucks, I will not kill fawns, nubbin bucks or young bucks. I will take pics of deer that I pass up but for me having a pic of a trophy buck is just not the same as harvesting him and putting him on the wall. Putting meant on the table is the last reason for me why I deer hunt, in fact I have to admit that like Mark I have got to the point where most of the venison I do not care for anymore. The buck that I took this year I had cut up to try my hand at making jerky and the rest the trim I am going to have made into burger, I take my trim to a place that mixes it with bacon bits and let me tell you that is some of the best burger I have ever had, even my wife likes it and she does not like venison at all. GMAN was the one who turned me on to the place that makes it, if anyone would like to know where shoot me a PM. One of these years I am going to try my hand at making my own burger as well but I will first need to invest in a grinder. I would also like to get a smoker someday as well. So seeing as I do not care for most venison anymore but I do enjoy the hunt and the kill and putting a trophy buck on the wall does that make me a bad guy? I also will not pretend to use the excuse that I deer hunt to feed the hungry but seeing as there is an over population of deer and I love to deer hunt (did I mention that I love the thrill and excitement of the hunt & the kill more than the meat?) and there are places and people out there who can not hunt or do not want to hunt but still could use the meat, then what is wrong with that? I see it as a win win situation, I get to do something that I love to do and others can benefit from it by me giving the meat away and at the same time I am doing my part to help balance the heard, what could be better? IMO it just does not get any better than that! So to try and sum this up the reasons that I deer hunt in order of importance to me are………..
1.Yes the thrill and excitement of the hunt & the kill are the number one reason I hunt whitetail deer. Guilty as charged.
2.To put a trophy whitetail buck on the wall. Guilty as charged.
3.To practice selective harvest which will help balance the heard which will hopefully help more hunters and myself to see and harvest more trophy bucks. Guilty as charged.
4.To put some meat on the table for families that can not hunt or do not want to hunt but have a greater need for the venison that I do, the benefit for me is I get to do something I love to do.
5.The last and least important reason for me, to put some venison on the table for myself and my family.
The bottom line is Buckshot that you and I will never agree on why we should hunt whitetail deer and that’s ok, at the end of the day I still respect the reasons why you hunt, and I hope that you can respect mine as well. 
Seriously dude, step away from the keyboard slowly. There were an estimated 32,000 + ducks on Pool 7 last week. I think the 2 I shot and gave to my buddy probably didn’t effect SQUAT on anyone elses hunt, or any birdwatchers binonculars for that matter.
j/k
. j/k.
) That is the final last piece of the entire hunting picture, for me. As long as the animal goes to good use, I don’t see what is wrong with it. Throwing the duck in the weeds or the trash wouldn’t be respecting nature, 100% agree, but giving it to someone to eat IS respecting nature IMO. I think that is the crux of the whole argument, and I guess where we will agree to diagree. 