the neck shot is not the 'hit or miss' thing you think it is. there is alot more to a deers neck than a spine and arteries, there is alot of meat on the neck.
an arrow doesnt have the knockdown power of a rifle or slug gun that will knock a deer on its ass if you hit it anywhere in the neck. even with gunshots the deer can get back up and run off never to be seen again because you missed the very small area of the neck that is actually a vital area.

if you can go out to the range and shoot a bottle cap 10 out of 10 times from 30yds with an arrow then stick with your idea of neck shooting a deer, thats about the same size vital area a neck has. now see if you can hit a paper plate 10 out of 10 times with an arrow, appx the same size vital area as a deer's chest cavity, then stick with that. Even with a chest shot if something we're to go wrong and you hit high, you spine them--you shoot low, you miss-- you hit further back you still have a decent chance of recovery--if you happen to hit too far forward, you've got a chance at the spine and arteries that you're going for in the neck. The chest area is a MUCH, MUCH higher percentage shot than the neck.