If he has the attitude that you should put a cat to sleep that easily, who's to say that he'll try hard if your other cats are in dire need? What if you bring your cat in and it can be saved, but he thinks it's better off dead so he doesn't do all he can do?
Well said Tonya!!! After those remarks, I wouldn't trust him with ANY of my cats.

AmberLee,

Don't apologize!