RE: Neck Shots ?
There is a big gap between the spine/artery to the top of the neck, and then another gap below that you could cut the windpipe and then have the deer die of suffocation. Also the gap above will have you tacking for hours on a wounded deer that may or may not die.
Vitals offer (broadside) almost a 16" high by 14" wide target on most deer
Again the same issue with head shots, smaller target=bigger room for error.
Tracking is another part of hunting and can be a fun and exciting part as well.
To each their own but I teach to take the broadside/quartering away shot. If the deer isn't presenting anything other than the head/neck, wait for a better shot.