We wont know until we get there, to be honest.
Maybe it will be a singularity that simulates faster than time can catch up.
Maybe it will be in infinite life that can live past anything, even the heat death of the universe, and continue to think, to live, to adapt.
Maybe something else entirely.
All I know is that you aren't immortal if you die, ever. So the life expectancy (time alive) has to be infinity.