You can be sure that everything is going to look professional for meetings and that you can present the same sheet of paper with the same information on to everyone that may be present at the meeting, and this is what makes word processing so important. It makes you look professional and it saves time and effort of having to write everything more than once.
Once you have mastered word processing you will find that the importance of it is to ensure that everything is in order and that you can have it presented exactly as want it to be. If there was no word processing everything would still either have to be done by hand or by typewriter and this is not going to benefit anyone in today's fast paced society.
You will find that you use word processing most days of your life when you are on your computer and want something written quickly that can be checked as you go along. Any editing can be easily done and you are not going to have to worry about making any mistakes as the word processor is going to pick them up and ensure that you correct them. There are simply no disadvantages to word processing that you will find.