If it were a monster buck, standing still, reasonably close range, I MIGHT try the shot, I doubt it though, because I have held off on bad shots before! For a meat shot, only if I was starving to death!
If you miss the spine, you can have a long tracking job ahead of you! And when you get started on the cleaning job, you will probably wish you had'nt shot, or had'nt found the deer! Me and another friend helped one of the guys on our lease clean a buck that had been ass-shot! It was not pretty, most of the rear quarters were ruined, and even though we both have strong stomachs, we both had to back off a couple of times, to keep from upchucking!
For me it will be "no shot," too great of risks, too little of rewards!