If you are in a position where you can say this with a straight face, apparently you've never had to figure out a "simple matter" like the state of a relationship. I haven't met a legal issue as complicated as making a relationship work.
I'm dating this swedish chick right now, she's in sweden currently visiting her family so its going pretty well . In all seriousness though, this goes back to the cute punk rock chick standpoint. Cute punk rock girls dont partake in this aspect of the womens need to be dependent on her boyfriend for all those little bull issues. If you're honest and tell your partner exactly how you feel in ever aspect of the relationship its really simple.
I have had situations where this wasnt the case and ends up with me leaving the dinner table saying something to the effect, i dont need this *&^%, i.e., when a girl started telling me what I "need" to do. You just need to find one that doesnt do that, is ok with you making your own decisions, and loves the decisions you make. Again honesty in what you both expect out of the relationship is key.
It seems that people dont know what they expect from their partner causing too many misunderstandings and arguments.
What it really comes back to is you making a sweeping statement like "if you can't handle a something simple like a relationship, you can't handle complex legal issues", which is simply laughable. I have no idea how what you just said clarifies that in any way.