Why is it wrong to keep a tiger in captivity?

THEY CERTAINLY SHOULD NOT BE!!!

do not delete answers, just add on please.

i think tigers should be kept in captivity because they have a safe place to live and have few to none risk's of being harmed. they get supplied water, food, and the love from the zoo keeper's or nature preserves they live in. therefor, i think tigers SHOULD be kept in captivity. my theory has come to a end.