Compulsive Liars

Who hates compulsive liars? I don't understand the need for lying.  Weren't they taught that the truth will always be the best answer and the truth will eventually come out. I know that there are people out there that love drama and life is incomplete without drama, but seriously why?  Its rude to tell people that you will be there in 5 mins when you know that you won't be there for another hour.  Have some respect for other people time. They can get a lot of things done within an hour.  Just be honest, seriously.