Wo Be unto Him That Is at Ease in Zion

The prophet Nephi describes some of the methods the devil will use in the last days to lull souls into a state of spiritually destructive complacency.

“…Others will he pacify and lull them away into carnal security, that they will say: All is well in Zion; yea, Zion prospereth, all is well—and thus the devil cheateth their souls, and leadeth them away carefully down to hell. And behold, others he flattereth away, and telleth them there is no hell; and he saith unto them: I am no devil, for there is none—and thus he whispereth in their ears, until he grasps them with his awful chains, from whence there is no deliverance. Yea, they are grasped with death, and hell; and death and hell, and the devil, and all that have been seized therewith must stand before the throne of God and be judged according to their works, from whence they must go into the place prepared for them, even a lake of fire and brimstone, which is endless torment. Therefore, wo be unto him that is at ease in Zion.” (2 Nephi 28:21-24)

Questions:

-Why is spiritual complacency equivalent to spiritual death?

-What forces make it next to impossible to stand still in terms of spiritual growth versus spiritual atrophy?