Subject: What is the advantage of neurons not being able to regenerate?

I know that in the course of evolution, processes that are detrimental 
usually disappear, and those that are advantageous remain. I also know 
that most cells in the body can reproduce to replace damaged portions 
of an organ or to accomplish growth. I also know that all living cells 
need glucose and oxygen to make ATP. Neurons can do none of these 
things. What could possibly be the advantage of these "deficiencies" 
in the neuron.I am desperate! Thanks so much for your answer.

Re: What is the advantage of neurons not being able to regenerate?