Would you shoot to kill a bigfoot if he presented himself to you for a shot?
Absolutely not, unless for the same reason some have already mentioned here, if my life or the life of anyone with me was in jeopardy.
There is a portion of bigfoot researchers that are in favor of killing one, for the sole purpose of presenting science with a specimen, so the mystery can finally be laid to rest. We've already been waiting for a number of years for the mainstream field of science to take a serious look at this phenomena, there is no harm in having to wait a few more years. In time, by observation, a viable specimen will be presented, either through death my natural causes or an accident. It makes no sense to me to simply harvest a specimen for scientific study.
A autopsy of a dead bigfoot will tell us things like physical makeup, anatomical structure, possibly dietary needs, disease resistance and give us DNA to use for classification. What it won't give us, and I find more important is whether or not it lives a solitary live, or in family units. Is it nomadic, migratory, or does it remain in a specific region throughout it's life. Does it communicate with each other, through a complicated language system, as has been eluded to by some eye witnesses in recent years, or through more simple means like grunts, howls and "wood knockings". If it does communicate through a language, does it maintain a history of it's origins, or maybe even have a religion. Does it live a life of self awareness, most often attributed to seperate mankind from the rest of the animal world, or does it simply just exist. Does it feel emotion, and express it like or unlike we do.
Think also for a few minutes on the fact that this is a creature that has eluded capture, or even long term research by most, if not all for many years. The one it's eluded has been us, mankind the number one predator on the planet. How could it do this, is it possible it's power of reasoning approaches our own? Many have suggested that this is nothing more than an ape, a descendent from an ancestor such as Gigantopithecus Blackii. Throughout much of history, there has always been more than one species of hominid, mankind, inhabiting the earth at the same time, until now, with the introduction of modern man. Modern man, the last surviving species of hominid... or are we?