I have no children, but I think after my kid reaches a certain age I'd be alright with it, just like how my dad was with my sisters. (Non pregnant or std's) only my brothers have kids, none of my three sisters and two are in their 30's

For me whether it's a son or daughter I wouldn't care if they are at least

16-18 (they'll do it anyways, at least you can guide them to be safe)

If they can just follow these rules (in no particular order)

1 someone close to their age

2 if they use protection

3 if they aren't screwing someone dangerous/toxic

Otherwise it should be fine, they'll learn things about relationships and those hard lessons, so long as they aren't abused and face no long lasting consequences why does it matter?

What's your thoughts, do you agree, or disagree and why?