orca2020
I'm actually a guy locked in chastity cage, and my brother is locked too.
For me, it's definitely not a single-gender thing; boys can be locked too. In real life, I know several other guys who are locked, but I don't know a single locked girl. So, maybe it's just the people you're around?
And yeah, it's just as important (if not even more) to lock boys. First, boys masturbate too. And second, there isn't just vaginal sex. To be honest, the cage did a good job preventing me and my brother from rampaging 😉, so ...