craigsub, I'm surprised that you would consider zero responsibility on the part of either parent a valid position. You are directly responsible for the existence of that person on this planet. Perhaps you were a bit "naive" to believe the young lady, but that doesn't change your obligations.
If we would like to shrink the gov't, and the public's dependence on it, individuals need to accept responsibility for their own actions - even mistakes such as your own (happened to my little brother the exact same way at the same age).