<Snipped quote by Fractured>
Let me put it this way. If you live forever, then you could at one point conceivably do everything you ever wanted to do and then some. Meaning you've done everything. I ask you... Then what? Put yourself in a situation where you've done everything there is to do hundreds of times, seen everything there is to see hundreds of times. Some people may like that, but personally it feels empty. There's a sort of specialness in doing things knowing that you only have one shot at everything.
Then do it again, meet someone new, go on a new adventure! What joy does death bring that life doesn't have?