Because of this I am accepting of termination of pregnancies, as well as early infanticide.
Brave position. But where is your cut-off? Immediately post-birth? Or at the end of "dependency"... you could be waiting a long while before you can be sure your mother's not going to throttle you!
Ok, so is the proposed infanticide purely defect-related? Surely this is just euthenasia? Or would it be based on the quality-of-life of not just the child but also the parent?