To me this song is about a materialistic girlfriend who is given everything, the singer is identifying himself as a son of a bitch in retrospect for contributing to this in the first place, the girl doesn't realize how good she has it, and doesn't give anything back. So when it's all over he's looking back on it saying thanks for nothing. People get blinded by love. On both sides. Someone could be taking advantage of you and they may not even realize it because they're using money and material things to fill a void in the relationship.
To me this song is about a materialistic girlfriend who is given everything, the singer is identifying himself as a son of a bitch in retrospect for contributing to this in the first place, the girl doesn't realize how good she has it, and doesn't give anything back. So when it's all over he's looking back on it saying thanks for nothing. People get blinded by love. On both sides. Someone could be taking advantage of you and they may not even realize it because they're using money and material things to fill a void in the relationship.