[Eternal]

We cannot make this decision for you. However, making a pros and cons list can be helpful when you're trying to figure out whether a relationship is worth it or not.
If you're fighting a lot lately, then it might help to reduce how much you contact each other for a few days just so you both can cool off. Then try and talk about it and come to a compromise about the things you have been fighting about. It's normal to disagree in a relationship, but it isn't healthy to purposely try and hurt each other. You have to try and take a step back and see things from each other's point of view and keep an open mind. That will help to prevent fights from escalating.
You said it seems like your doomed, I think you should really think about your relationship and whether your happy in it or not. If you're hurt or upset in a relationship more than you are happy, then you might be better off finding somebody who will treat you better.