I was once registering to climb in the Tetons, and the ranger was a very tired dude. He had spent the last two days trying to rescue some people who headed out into an early season storm under-prepared. He showed me their permit. He had written...."no gaiters, leather boots, cotton clothes" across the permit, and issued it. He had no right to deny it. He could have refused the rescue attempt, but went anyway., and scraped their frozen bodies off the rock. He wished he could have denied the permit, but would have never refused the rescue attempt..
Myself, I was once in a rather threatening position as a ski patrol with an avalanche coming our way . I started to run, then turned back to pick up a kid I had been treating and carried him through the beating and rolling that followed. We made it, and I can live with what I did, but it is still a rough memory for me. I didn't think about it, just did it. I can't call it stupidity or heroism, it was just what I did. Anyway, I think a person should try for the rescue when it is reasonable, but I find it hard to question others judgment in a given situation.