I don't think you need to be going through a break-up or heartbreak to have some kind of connection with Beck's song, "Lost Cause." Everyone has those moments where they're thinking if anything is really worth the trouble. Especially if it's something where you have done nothing but invest yourself in fully and you still get nothing. You're just "tired of fighting for a lost cause." His lyrics just help you realize no one really cares and that in this world you're are on your own.