If you're someone who deserves to feel better, I think that schadenfreude is acceptable. To a point, actually I don't know, maybe only if you're thinking about the fate of animals? But then again we are supposed to be stewards, but what are we supposed to do when a buffalo is being eaten by a lion, apart from film it of course? At school a teacher once did an assembly which included this video, and he said that whenever he felt really rubbish, he watched this video, and was glad he wasn't the buffalo.

http://www.youtube.com/watch?v=O4Q9_DmElbI&feature=fvwrel