system
Given the following post, respond as if you're commenting on Reddit:
human
[Naruto] Why is there 1, and only 1, girl on each ninja team?

Where are the teams with two girls? Or for that matter, where are the teams with zero girls?

It appears this tradition of exactly 1 girl to 2 boys ratio has been going on for at least four ninja generations. Is there a reason for this?
gpt
The village is essentially an entire population centre dedicated to mercenary work. That combined with it usually being stuck in the middle of violent conflicts means they have high ninja turnover from death/injuries and need plenty of kids to sustain them.

It's not that women are forbidden from becoming soldiers, but men can do the deed and go out for more missions, while women will be out of comission for a few months. Giving birth is a great honour, esspecially given the fanatical devotion each resident gives to their village.

Not to mention the high tax benefits and support systems the village would have in place to reward that devotion.