Nice thought, but no it's not. If your kids are in public school, it's up to the school system, it's not your decision. There are all kinds of decisions YOU can't make just because they're YOUR kids. Can you demand a smaller class size? Demand a certain teacher? Opt out of math? Decide when the school year begins and ends? What they can wear in school? I could go on forever, but you get the idea.
We took our kids out of school for a week every year to go to WDW, but always made sure we got the excused absense. I don't think it's appropriate to thumb our noses at the school if the asbsense is unexcused. I would be upset, but abide by the school's decision. The alternative would be putting them in a private school or homeschooling if it botherd us that much.
Some of the attitude I'm reading in here is troubling. "We're going where we want to go, when we want to go there and nobody can tell me any different!!" That's selfish and childish.