Re: Is aging inevitable?
Possibly, you should look at life as a process.
Incredibly, complex as it is, it manages to proceed by continually changing while maintaining some constant features, through development, growth and adult life.
Anything strange that over many years the process may get impaired and gradually degenerate?
Would an immortal species be able to win the "natural selection" game?
There would be an increasing competition for resources. But if nobody can die, this should mean that they should be able to survive (i.e. maintaining an internal order by using energy) without external energy input (not enough energy for all of them).
This violates both the first and the second principle of thermodynamics and any other reasonable physical laws...