There is no reason for outright animal cruelty. However, there are many views on this issue. These websites present a wide selection of those views. You are encouraged to study them and draw your own conclusions. Remember that what one person considers humane treatment may be what another considers animal cruelty.
James S. Huggins' Refrigerator Door Preview
— Go This site features James' trusted friend and companion --- his black cat --- Spot; James S Huggins is an eclectic professional speaker, author & technologist; His personal site, the Refrigerator Door, also features information, stories and humor that interests him as well as one of the net's most extensive information resources on webrings and webring systems.