I don't post here much, but this question definitely caught my attention.
I honestly don't think that setting an age of consent is realistic. DIfferent people mature at different rates... I know people who were "ready" at the age of 16... they understood the risks, possiblities, and also were in a serious relationship with the other person... as the counter point to that I know people who should NEVER have sex.. just for the off-chance that progeny would be produced. As mean as that sounds, I am copletely serious.
I honestly don't think that its possible to enforce such a thing... if a person wants to do something they will wether there are laws governing against it or not. Exactly the same as drugs or alchohol, if someone finds a reason that they want to break the law, they most certainly will.
I have to laugh at #4... a friend of mine who I would consider mature enough to marry, married a woman who in my opinion wasn't... they were married 3 months before they got divorced... on the other hand 2 people who I believe aren't even CLOSE to mature enough to get married got married 2 months before my friend and are still married to this day... the difference between the couples? the divorced couple- 1 kid and an understanding of the world.. how shitty it can be and how cruel people can be... the married couple- totaly naieve to the world, they have less of a clue about whats going on than most people half there age, I guess that ignorance truly is bliss.
As far as any kids... it all depends on the circumstances... if the biological parents are capable of taking care of the kid, they get to keep it... if they and there parents are inept.. either abortion or adoption...... before you say "what are the requirements for "capable of taking care of the kid" well, that would be a matter of monetary means as well as mentally capable of doing so.
Now, I have a question for you Tourguide. Your daughter is in love with a guy who you believe is a dumbass. Your daughter is 17 and is intelligent (in your opinion) enough to make her own decisions. She gets pregnant, what do you do? (others may answer this question at there own descretion)