[Burner of Anime]

Originally Posted by ReddyRedWolf

Interstingly the age of 17 is the age of majority in Frontier. As Ozma is advising Ranka who is 16.

Also in Macross 7 mama Millia with her bugging of Mylene and later Basara indicate that there is trend of young people marrying early.

Spoiler for End of SDF Macross:

When planet Earth has survived a world war [the UN-ification war ] and had a population of 6 billion reduced to 1 million in less than an hour, it becomes the prime duty of the survivors to repopulate the land as quickly as possible. If that means dropping the legal age of majority then so be it.

Now throw in a giant alien species who are tougher, stronger and sure a hell can live naturally longer as possible mates. The social change and possible baby making can go for a very long time Max and Millia having 7 girls over 30 years should be a very common occurance by now.