It is important because:

"Micheal Vick killed thirteen dogs by various methods including wetting one dog down and electrocuting her, hanging, drowning and shooting others and, in at least one case, by slamming a dog’s body to the ground.

Michael Vick didn't make a mistake. He didn't "make a bad choice." Over a period of five years he forced dogs into deadly fights, and he personally killed, or conspired to kill, thirteen dogs. He didn't pick a quick, painless method of killing, but instead chose a variety of means that qualify as torture. Pit Bulls are powerful dogs. Imagine how hard you would have to work to kill a Pit Bull by forcibly drowning him"

Micheal Vick is an evil person that commited barbaric acts to innocent dogs. It is a travesty that any team in the NFL would want to employ him. Or that the NFL would allow it.