Why do people say assisted suicide and removing life support is murder?

Okay, Dr. Kavorkian went to prison for “murdering” a guy who wanted to be dead. Why is that a problem? He wanted to die, so his physician helped him. The guy had most likely prepared himself and was ready to move on.

Why was Kavorkian indicted, then?

And with life support. People scream that taking someone off life support is murder. What if the person wanted it, but everyone else (family) said that they wouldn’t allow it? Personally, I wouldn’t want to live like that, or have to watch someone balance between life and death forever. I couldn’t eat, talk, walk, or anything. That’s like torture… why would anyone do that to someone, besides the fact that they love them? hopefully that made sense…

Oh, and I don’t mean to offend anyone, by the way.

Why is assisted suicide wrong, and why is there an uproar over life support patients?