Allow me to dissect your post.
The dogs Vick killed may have been injured greatly, but this was caused by the dog fights that were setup thru Vick and his buddies.
The dogs were not executed in a humane manner. They were tortured. Electrocuted slowly and painfully until dead. Repeatadly thrown to the ground until deceased. Repeatedly dunked within a swimming pool at intervals until drowned.
There is a clear record of what was done, and Vick's buddies are even ratting him out now to save their own skin. It is quite obvious that Vick did not care for the animals, and CLEARLY did not give them a great home, as you said he did.
Yes, this is America, land of the free, but you should also know that "the only place to find freedom is in the dictionary, under "F"" (Matt Good)
There are laws that govern the treatment of all animals, domesticated and non-domesticated that prohibits inhumane treatment, and Vick violated that law and treated the dogs quite brutally.
Next time before you move your fingers to comment on a subject, do some reading on it so you don't come off so ignorant.