Like others have said, this song may be about a relationship, someone you hate, but love to keep around. Those are all good, but what I think it's about is probably his past addiction with alcohol.

He says he wants a "normal life", and he also says, "I learn to love to hate it." It sounds confusing, but say it slowly, understanding each word. I learn... To love... To hate it. He learns to love the fact that he hates it.

"Just call my name", has a lot to do with personification with addictions. A lot of addicts say, "It calls my name." That could be what Ben felt like with alcohol. "Your scream is burning through my veins." Maybe meaning, that the intensity of alcohol and the effect it has on you when your intoxicated, is like screaming in Ben's words, and the alcohol is running through his veins. When he says "Sooner or later, you're gonna hate it, go ahead and throw your life away" it sounds like a 'note to self' kind of thing. His conscience is telling him it's a bad idea, you're gonna hate it, but go ahead, throw your life away. Kind reverse psychology.

He says, "Why am I so pathetic" possibly meaning his negative feelings are making him feel this way, causing him to turn to alcohol.

Towards the end, he says, "Go ahead and throw our life away" our life, meaning his and his conscience, or maybe the alcoholism is personified, using reverse psychology. Addictions are demons that attach to you, making themselves at home, and always make you feel like it's "us". Not a "you" and "I" situation. Ben said what the song was about, being in a relationship you don't want to be in, but keep it because it has is perks. That's what addictions feel like.