If one can attain immortality, why bother about cultivating immortality or demonic cultivation?

On the path to immortality, I will kill gods and demons who stand in my way. What does the so-called irreconcilable conflict between the Dao and the demons have to do with me?

Those who obey me are righteous, those who oppose me are evil!

The main world is immortal, and the dungeons are, in order, Demi-Gods and Semi-Devils, A Record of a Mortal's Journey to Immortality, Shrouding the Heavens, Yang Shen...