Cage sweet cage

Why would the whumpee be kept inside a cage?
I'm sure the kidnappers, enemies and torturers have their reasons.
Check the complete Tropes index for more.
== Animes ==
== TV Shows ==
Arrow
* 1x11: Oliver Queen (Stephen Amell) tries to infiltrate the enemy base, but is captured and put inside a cage, handcuffed to its bars.
Dark
* 2x02: Jonas Kahnwald (Louis Hofmann) was shot on the leg and almost hanged, and now, he's being kept inside a cage. His leg is still bleeding, and to crown the moment, the mysterious woman arrives and threatens him with a gun, making him flinch.
The Flemish Bandits
* Ep 7: Jan de Lichte (Matteo Simoni) is sold out and captured. He is kept inside a cage for a brief period of time before the torture session.
Travelers
* 1x05: The whole team (minus MacLaren) is captured, and when they wake up, they are restrained to weelschairs, with needles in their arms, inside individual cages.
== Movies ==
Baywatch (2017)
* Matt Brody (Zac Efron) wakes up tied up inside a cage, just about to be dropped into the sea.
== Dramas ==
Word of Honor
* Ep 29: Zhou Zi Shu (Zhang Zhe Han) is captured by his former assassins organization, and transported inside a cage to the prince's presence.
== Gallery ==