The other day on a par 5 I fired my 3rd shot over the green and chipped in from 20 yards, my partner went nuts, my opponent cheered. When I got into the club house I collected $40 for a skin.
The very next day, I called a ball in the side pocket that I was going to use 2 rails to a very tight position on my second to last ball, from there the out was simple. I came off the first rail and bumped one of my opponents balls and knocked what I had planned to be my last ball under one of my opponents balls and left an easier out than I would have had even if I had pulled off my tough position shot. Luck definitely factored into the game. I got my break and run, my opponent was pissed, I admitted that it was a major roll, and my partner said "nice roll" when I came back to the table.
My question is, why the difference? I wasn't seriously trying to make the chip on the par 5, I just trying to get it close, but in one case luck is cheered and in the other it's heavily frowned upon. At the same time though, I can't imagine pool changing enough where I wouldn't feel guilty about getting out on that table.
When you miss a shot you wanted to make and freeze someone to a ball, you are getting rewarded for making an error.
You crashing into balls and having a shot isn't the same thing, because you are doing it to yourself, and not someone else.