|i agree that #1 = "why?"|
#2: Be aware that no matter how you enable this feature, doing so will be increasing your PC's vulnerable surface area. You will be allowing remote control of your PC, which is exactly the kind of vulnerability that hackers practice exploiting. Sure, you can probably encrypt traffic, require a password, etc., but you will still have increased vulnerable surface area.
also, just Shutdown, or Shutdown and reboot?