It's easy to get overwhelmed while running a campaign, even when it makes its base goal early. For freelancers, it's not uncommon for funds from a project like this to constitute a MASSIVE portion of their annual income, and spending weeks pushing for every little bit is exhausting. It's hard to deny its effectiveness for cartoonists, though; as of this post, comics projects on Kickstarter have the highest success rate of any category at 64.76% (compared to the overall average of 40.24%). I certainly plan to run many more campaigns in the years to come. Hopefully with no more nailbiters.
Rock on, guys, and never stop drawing.