Well, I really think that bitterness is just the urge for vengeance without the balls to actually enact it, so I'd call it a pretty weak emotion to start off with. I'd say it serves no purpose and stops you from moving forward with your life after adversity.
Yes I know that sounds judgemental, but I speak from experience. I've been bitter about things, but in the end the only one I was harming was myself and I guess maybe my kids too. What's the point in sitting around feeling sorry for yourself and wishing things were different? Things are as they are. You choose to move on, or you choose to sit and stagnate.
I choose moving on.
