Because the best thing for someone who can't concentrate is to write 50,000 words in 30 days. Also, it's a habit. I've participated since November 2010, and even though that's the only year I won, I figure I'll just keep trying. Someday a complete, decent piece of writing might find its way out of me.
What is NaNoWriMo? In a word: Motivation. It challenges writers to take their noveling aspirations to the next level. Throughout November, participants scream, cry, and bang their heads against walls all in the pursuit of reaching their goal of 50,000 words (that's approximately 1,667 words per day). Even with the screaming and head banging, it’s a lot of fun.
Reaching the word count in the 30 days is an awesome feeling, but the main goal of NaNoWriMo is to give participants the opportunity to just write without considering edits and other hang-ups that tend to stall or even kill the writing process. Check out the list of published NaNoWriMo novelists.
Be brave and take the challenge of NaNoWriMo 2014. You won’t be doing it alone. Throughout the month receive pep talks from authors and NaNoWriMo staff, meet local participants at write-ins, and, of course, get that novel written!
The writing whirlwind begins November 1.
(The indented portion is from a blog I originally wrote for work. It still absolutely applies.)