To store energy to be used in the future.
I see what you're saying but you will still feel pain since you have nerves, disconnecting them with cause you discomfort, and you'll lose blood, which will in fact hurt.
Answer:
kindness and knowledge
Explanation:
In carreers such as these, kindness and compassion are very important things because you're dealing with other people who want to be treated with respect. You won't bring in customers or clients being rude and mean to them the whole time, then no one will want to do business with you. As for knowledge, no one is going to want to go to a hair dresser who doesn't know what they are doing with the risk of ruining their hair. Also no one would want to see a therapist who can't actively give them advice.
Either give them a new home
Pass them off and say no backsies
Kill them and hide the body
Hope these help