How about Voodoo, pyramid power, psychic phenomena, UFOlogy, grapefruit dieting? When creationism has an active research program that publishes real information, then it can be taught as science. Until then, it will remain at the fringe with polywater, cold fusion and other "scientific" rubbish that sounds good but doesn't pan out.
In this country, we have representative democracy. If my city council votes to include creationism, then you should butt out. It's none of your bees wax. My community doesn't care what your opinion of our beliefs are. Get that thru your head.
Show me how believing in special creation is inconsistent with the rational pursuit of scientific truth.