Because we live in America, and in America we have these dictators (Yes, we are dictated, don't be fooled) and they let people drown there minds in useless crap called the news, where they mock people dying in Africa, and [possibly] show how your next door neighbor is a child molester that's been making pornography with infants in his basement since you moved next to him. Then the sad part comes in... Some people are so fooled by this establishment of patterns that they show them something good, and people think it's bad. Like weed. America.
Well let's just list off every danger of meth when a lab gets busted... It takes up too much time and besides, all the "dangers" have been engrained in every persons memory.