system
Given the following post, respond as if you're commenting on Reddit:
human
[Batman] Why does Batman get children to be his sidekicks?

In universe wouldn’t it make sense to get a young adult to be your sidekick? At least one 18 and over. In the Arrowverse shows the sidekicks are 21 and that make sense. Why doesn’t Batman at least get people who are legal adults to be his sidekicks?
gpt
Batman doesn't seek out sidekicks.

The backstory of each of the robins is some variant on batman finds a kid, the kid starts fighting crime, and Batman feels obligated to take them in and train them rather then letting them go it alone.

Batman *wants* to work alone, but the universe keeps throwing 12 year olds adamant on fighting crime at him. It's not his fault the universe doesn't also give him 21 year olds.