Well this will be my sixth year participating, fourth year officially. I rather enjoy the stress, consuming gallons of coffee, and being balled up in a corner crying into the wee hours of the night.
No, its really a lot of fun. Its a chance to make new writting friends. there is no judgement on how much you accomplish. if you crossed the goal line great! And if not, you should still celebrate as this is a huge plunge to take.