Short of all shelters being No Kill, they don't seem to have a choice in keeping all the pets alive. I could never work with a kill shelter because I am so darn wimpy. I do, however, think in some cases, some animals are better off not suffering a life of cruelty etc. and they are better off, just "going to sleep"..... in a way, they are put out of misery. On the other hand, if the animal is perfectly healthy and just not wanted by anyone, its a darn shame.

Spaying and neutering should be free.