Well, do you?
I signed up just after DS had turned one thinking that I'd have time to actually do anything. Turns out I did - I diligently plonked my **** down in front of the computer and did not move until I'd written 1000 words a day.
That lasted approximately 3 days and then life ***** slapped me and asked me what the hell I was thinking. I mean, time to write? PFT!
That said, I'm still tempted to try again this year. Because I am insane.