Sounds like a terrible idea to me. You have these minimal commitment relationships that are only incrementally extended. What happens when the commitment ends after you've had kids? The mother and kids are screwed since they have no legal recourse to get you to support them ("sucks to be you, we never got married so I don't owe you anything")?
A healthy society is predicated on strong families and minimal commitment relationships sound like a recipe for weak families.
A healthy society is predicated on strong families and minimal commitment relationships sound like a recipe for weak families.