Why is it prohibited to use a cellular phone while driving to make/receive a call or text message?

• You can’t give proper time to the sender.
• If you are unable to drive with one hand, using Bluetooth is a good idea.
• It can be a distraction that can take your attention away from the demanding task of driving.
  Explanation:

  "Do not use a cellular phone or other electronic devices while driving. Using a cellular phone to make or receive a call, or to receive or send a text message is a distraction that can take your attention away from the demanding task of driving."
• You can’t concentrate on the call properly.