1. I don't hate it, but I dislike it often (I mean my offline job). Why? Because it isn't my dreamful job and I want to run my own business, in order to be able to start my dreamful jobs -- writer + film maker. Why I don't switch? Because I don't have enough money to start up my own business now. That's it. I hope to get richer soon! Really hope so!
2. I think that many people if not hate, at least, dislike their jobs, because of reasons like these:
2.1. They wanted to work something else.
2.2. Their boss/bosses are not good.
2.3. Their colleagues are not good.
2.4. They worked this job for many years and they're getting tired and bored.
2.5. Etc., etc.