Do you think men should be able to opt out of being responsible for their unborn baby?

I recently saw a show that featured a lawyer who is fighting for men to have the right to opt out of supporting their unborn children. His basic premise is that women have the right to abort when there is an accidental pregnancy, but men have no option. The idea is the men will have a specific time, from the time they are told about the pregnancy (it was suggested two weeks, and it has to be done in the very early stages of pregnancy) to inform the woman that they do not want the baby and they will not be a father to the baby or support it in any way. This gives the woman a chance to abort if she is under a false impression of what the man might be willing to do. It also gets legal documents before the baby is born to hook the father onto agreeing to support if the baby is born and he is saying he wants the child. What do you think?