Immortality would be nice, if there were things that made it worth it.
Immortality is defined as living forever, that does not mean you are not prone to bodily pain, harm, loss, etc.
By the time you hit 200 or so, you could of already succumbed to many diseases that could not only cause paralysis, but many other literal life stopping symptoms.
You honestly think that through let's say 500 years, you won't of been a victim of at least 100 diseases and/or processes of bodily harm?
You think just becuase you can't die, that means you are invincible?
Think about it, living forever has far worse cons than pros..