Can someone explain extradition to me


Can someone explain extradition to me

In: Other

Person a is accused of crime in location a but lives in location b so location a requests location b send person a to location b to face charges. If the two locations have an agreement in place they follow the agreement on how it is processed.

If a person committed a crime and fled the country why go to the large expense of extraditing the person and then housing/feeding/medical care for whatever period?

Why not just call it exile and be glad they are gone, no longer a threat. I understand you have to send a message that crime needs a punishment but sometimes the expense of that punishment may be excessive – isn’t it?