You do yourself and others a dis-service by not dispatching them. They are as dangerous as a poison snake. You would never let a copperhead of rattler live near by, same goes with poisonous spiders.
Brown Recluses are probably more deadly. They lurk in dark areas so always be aware when you're in a tool shed, barn, wood pile etc.
These types of spiders are NO GOOD TO ANYONE.

KILL THEM.