This is facilitating that situation.
Facilitate what situation of exactly?
The sex is going to happen around that age, but as a parent it is still not your job to make it easy, yeah?
Why?
consequences of mistakes are still VERY HIGH
Not as high as letting your kid drive a car, for example, but you're still gonna let them, I suppose. Weird double standards.
What about unimaginable suffering before one's certain death? Would this not qualify as a worse fate than death?
I don't really have a strong opinion on this topic, but one example comes to mind that shows that many people don't act according to your maxime. Have you ever seen those battlefield suicides that are filmed by the drones in Ukraine? I'm not going to link them here, but they are plentyful. So, so many soldiers, many of them wounded, decide to take their own life to avoid going through an experience that they probably view as worse than death. I just think it's interesting and worth considering.