I remember reading a long time ago a very basic concept related to our humanity: we strive to avoid pain. Of course, at face value it's simple, intuitive and reveals nothing that we didn't know, but when you begin to strip what pain means, then it gets really interesting.
The pain of guilt, for example, is hard to define for most of us, but yet, it's very real and very painful. It's probably because it has to do with our psyche and our self worth, that we do almost anything to avoid feeling guilty. As a matter of fact, even when we act immorally, we find a good justification for it.
We can talk until we are blue in the face about the reasons why what we did, or someone we know did is justified, but at the core of it all, a wrong can never truly be right. This is very much so the case for everytime someone has said "look what you made me do".
The phrase is interesting at so many levels, because it allows for the perfect escapegoat to take the fall for the action, it releases any responsibility from the agent who committed the action and through a mental contortion it puts the victimizer in the victim's chair.
We see this in abusive relationships too often, and you would be hard pressed to find an abusive husband or wife for that matter, that committed the abuse just because they felt like it. It's more often the case, that they were driven into action by other person's actions, and thus a victim too.
Ridiculous? Yes, I know, but it's how our brain works, and it's how we play the victim game at times.