TESTBLOKE. I think the real answer to your question lies within yourself. Regardless of how others see the situation, it is how you felt that will decide your course of action. I had a similar quandry a few years ago, not exaclty the same but a very similar judgement issue.
I was sent out to Canada by a shooting and fishing magazine to do a feature story on a lodge that ran spring salmon fishing and spring bear hunting trips as a combined package. I ama keen shot and a keen angler - and have no orries about either. However, after 4 days fishing and only catching one small grilse (a one sea winter returned salmon) of about 4lbs it was then onto shooting the bear.
I am a stalker and used to take people on guided hunts myself, getting them into close quarters before taking the shot (one guy I got to within 5 meters of a sika hind - and he missed! Another time I got a Danish girl, olympic rifle shot, within 8 meters of a sika stag. Brilliant, we just watched it and she chose to not shoot.)
Anyway, I was expecting proper hunting for these bears. Instead, i was sat in a plastic chair that had been placed in a ring of small firs, so closely planted that they had to be trimmed to get into the seat. The bears had been baited for days beforehand and the truck was like a dinner bell to them. They would come in within minutes of the truck departing, all I had to do was sit and wait about 30 meters away, being eaten by mosquitoes despite the DEET 100% and face net and every other device to keep the things away......I sathere and sure enough, within 10 minutes a small bear loped in and started to eat. I just watched and got some pics. Then a BIG bear came in and cuffed it round the ear. This bear was very distinctive as it only had 3 legs, the front left had been lost at some time.
I raised my 7x64 rifle and put the cross hairs on the base of its ear. It was an easy shot. I breathe slowly and prepared to squeeze the trigger. The bear was totally unaware of my presence and just stuffed itself. Then i put the rifle up and contemplated things for a moment. I raised the rifle again and took aim - but something didn't feel right to me. I was uncomfortable. The bear was sat stuffing itself quite content and I could have shot it 10 times over. It finished the food and got up and came down the track right towards me. I raised the rifle and put the sight on its head (no good chest shooting a bear, they charge forwards! You HAVE to stop it dead!) Anyway, it ambled down the track - stuck its nose in the trees about 2 feet from me, grunted and trotted off. I didn't shoot, but had it put a paw in I would have.
The reason I didn't shoot it? Despite having shot countless foxes and deer in my time. The bait. Instead of natural food such as a small deer, or fish - they had used a drum full of Tim Hortons doughnuts - yesterdays doughnuts. If I had been on th eintercept to the bait, i would have felled that bear. If it had been natural bait, like they use fo rleopards - same, i wouod have had no hesitation in squeezing off the shot. But because it was doughnuts, it just didn't feel right.
i went back and told them the story. They were furious - they had been after that bear formonths. It had been raiding the fish farm down the road and the leg was lost in a wire snare they had set for it.......it was a real nuisance ear and I had let it go! Not only that, but I had lost the story. i phoned my wife and told her of my quandry...she said not to worry. I did what had felt right for me at the time - had I shot it, I would have felt wrong about it for the rest of my life. She was right.
So, although the circumstances were different, the situation was the same. You didn't take any pictures because for you, at the time, it felt wrong. There is no shame in that and it means you can sleep at night. You have not lost anything, you can always go back and get pictures if you feel differently.
I got the story in the end. I stayed over an dmissed my flight home. I told them why I wasn't happy about the shooting over bait, so they put me in a position where I could intercept a bear on its way in to another bait position. I felt much better about that.