Being immortal is nice.
That could backfire pretty badly though. Imagine being effectively immortal and locked away in a cage somewhere for all eternity.
Well in that case I would hope that I was a smart enough immortal to install a self destruct option on my body
Since I am immortal things that would normally kill a person would not apply
So a suicide type of attack might come in handy instead of being captured and tortured for all eternity lol.
For actual immortality, I don't see how you could possibly find a way to kill yourself; it would be in contradiction to the whole concept if you could. Of course, this being mostly a "magical" attribute, as no organism has ever been found that was effectively immortal (tardigrades being close, but not quite there
), I guess there is plenty of room to imagine how this could work, and how one could get out of an unpleasant situation derived from it.
Now, something simpler, like not aging, would have some of the same benefits of immortality, plus you could still die by other means if the need arose.
I meant you could make it pretty difficult to be captured have a nuke installed in your body
Explosive magic if its allowed
That said since it is actual immortality anything that would physically kill a human might not apply
Besides those dragonball Z scenarios where Cell gets literally wiped with a KI wave down to an atom to stop all forms of regeneration
The other type of immortality would be the Highlander type where there can be only one but your basically an immortal until your neck is chopped off causing a Quickening
So I guess the immortality that makes you immune from a natural death and the type that makes you immortal to all forms of death
In Science there are the Hela Cells
http://en.wikipedia.org/wiki/HeLaOr Jellyfish
http://www.boredpanda.com/turritopsis-nutricula-immortal-jellyfish/I was referring to general immortality to natural death as a wish or to the point that it is nearly impossible to be killed unless they wish for it.