I think the age of consent should be 16. I think that’s a pretty good age when your mature enough to engage in a sexual relationship with your partner. I wouldn’t arrest anyone, though, if say a 19 year was having sex with a 15 year old with the parent’s blessings. You would have to judge it on a case by case basis, though.
As an aside, you should be able to drink and drive (not at the same time) when you’re 16 but I don’t want to derail the thread. I just wanted to make a point that I think at 16 you’re mature enough to make decisions on your own.