do you want to live forever
Definitely not. It wouldn't make any sense for me to.
and if so, why? Make an effort to defend the position of immortality as something we as humans desire and/or should desire. Ethics are of particular import here, not to mention aesthetics, metaphysics and epistemology to a certain extent.
Going by those parameters then, Immortality should be desired by humans
after several deep societal changes are attained, which may well never happen.
For starters, ecological and demographic stability are prerequisites. But even more urgent than that is the conquest of true widespread health in families and societies, which is unfortunately unlikely to happen in the next few centuries - if at all.
I would argue that immortality is probably the worst curse one could wish on a person, since there is no real sense of progress, time, etc.
Immortality
per se is quite the terrible curse, although I guess some specific subvarieties are even worse. And, under utterly utopical circunstances, it can be bliss instead.
I would sooner wish to be reborn/reincarnated, if there was no option for nonexistence, than to live forever, either as a disembodied spirit, or in some immortal body.
I'd say there are 5 variables that are important to the discussion, though there are likely more.
Material Vs. Immaterial-Whether the immortality is corporeal in nature or whether you have gone beyond the physical and have some sort of at least semi spiritual body.
Communal vs. Individual-Is the immortality a part of a large society or is it something an individual has, by one of many methods or traits associated with that state?
One of the major factors. Loneliness is a very unhealthy circunstance.
Innate vs. Innovation-Has the immortality always been a fact of life or has it come about by some outside source?
I'm not quite figuring how that is significant. Does it relate to how trustworthy and reversible that immortality would be?
Permanent vs. Provisional-Can you never cease being immortal or is there a way to stop the state and render yourself dead?
This may well be
the single most important factor.
Resistant vs. Nonresistant-This is probably one of the traits least thought about. Are you physically indestructible or even resistant to disease, or are you subject to all or most of the human weaknesses, but are simply unable to die naturally, such as the elves in Middle Earth?
And how does aging affect you? Not only physically, but also emotionally and mentally?
Personally, I don't think humans are at all well suited to immortality or even to plain old age. Far too much attention has been given to survival and too little to actual quality of life. Far too many people actively pursue what amounts to a life of misery (not only or even mainly in the financial sense) and, worst of all, make a point of passing it forward to the next generation.
IMO a sixth variable does exist, and it will be related to Quality of Life, as well as to power over one's circunstances. In fact, it is important enough to make the worries about immortality proper quite secondary to this far more important matter.