I'm just curious if there are any legal ways to "dodge the bullet" by preemptively stating, in a legally binding way, that you do not wish to have a child, will not take any responsibility for any pregnancies that might be attributed to you and that your partner is aware, agrees and has no objections to this position, thus has no way to later claim anything from you in the event of a pregnancy, should that event occur and should she decide, against your recommendation, to bring the pregnancy to term.

This document should also state that it is the obligation of both parties to research, negotiate, agree upon, implement and maintain a contraception plan, with any non-accidental failure of which being considered in breech of contract.

This would be very useful for couples that wish to "keep their options open but do not wish to have children at this time."