I think the main line needs to be drawn at the reason for termination.
This also needs to be in context with the disadvantages that a single mom has to deal with. I think we can all agree that fathers do not share an equal burden when it comes to career options, housing, etc. It's not like an STD where your peehole burns for a few days until the antibiotics kick in. This is at least a 20 year investment of time.