Would You Like Some Cheese With That Whine?

Why do some people refuse to do their job simply because they do not want to do it, leaving it or others to do. Why when asked to help do they answer with a flat no, effectively admitting they are of little use? It must be nice to have no sense of responsibility outside of your little niche that you have carved for yourself and whine your way out of everything else you do not want to do. I can not understand why some people refuse to help others while at the same time insisting others help them and complaining when they do not, making up stories apparently trying to make others look bad. It is usually the ones that have a work ethic and are willing to do whatever is asked that get abused and under-appreciated, while the squeaky whiners get noticed and advanced beyond what they deserve and certainly beyond their value. I guess that is the way the world works, unfortunately.