I guess each person is different. I have zero sexual interest for women under (at very least) 25 (i am slightly older than him at the time they meet)
Even if they look older than they are, i still have no interest because there is too much different life experience and expectations. I just don’t click (as a friend let alone as lover or partner).
Why 18 and not 17 or 25? Well society decided this is a (imo conservative, could have been higher) threshold for old people to have sex with young people.
Also 17 year old people can totally have sex with people of similar age (and we all have done 🙂) so it is not really about sexual self determination but rather avoiding predatory/manipolative behaviors of (much) older partners/lovers
You are really not talking about this any more.
What Germany has to do with this? What war has to do with this?
If you weren’t a trustworthy internet stranger i would make conjectures that this is a topic that hits you personally and you live in Germany. And you are talking about yourself here.
But good you are a trustworthy internet stranger that totally would not look in all possible provisions and exceptions for justifying their actions