Well, I don't think that any living person knows if death is better or not. On your girlfriend case just move on, there are plenty of other females out there, you just need to believe in yourself and push yourself. Don't listen to her whenever she calls you worthless, whenever someone says that, they're worthless themselves. I don't know why you don't believe in God, everyone needs to have their own savior, and if it's not God its Satan, and who wants to believe and worship him?
All I can say is move on with your life because you'll find someone else, and don't believe that your worthless because your not, no one is.
All I can say is move on with your life because you'll find someone else, and don't believe that your worthless because your not, no one is.