@Petnavis,
I'm assuming you're implying the parents thought he'd never wake up. Ok, he still needed someone to pay his hospital bills while he laid there. He still needed someone to make medical decisions while he laid there. It appears to me from the story, the parents knew his aunt would step in so they off'd themselves for justice. I still see that as irresponsible as a parent myself. If something happened to my children, I wouldn't commit suicide to try to get justice for them. Especially if they were minors and still needed me, especially if they were laid out in a hospital bed and needed me to watch over them and make sure euthanasia believing doctors didn't come along and off them. If I'm wrong with my initial assumption and you were making that statement for some other reason, disregard.
As far as comas go, I see it as an avenue in medicine we don't fully understand. I've heard qualified medical practitioners make convincing arguments that, depending on the type of coma, it's the body's way of healing from serious physical trauma. Also, if we're going to play a numbers game, I'd argue that it depends on the coma. One type, sure, based on experience, not mine, the medical community's, shows they're less likely to wake up, another type based on experience, shows they're more likely to wake up. It's not a broad decision across the board when it comes to comas.
@Moth,
Exactly. There's a lot of problems with parents just up and committing suicide for justice while they have a child laid up in a coma.