Meth gets a bad rap. It's not that bad, they make a pharmaceutical version of it. Most of the street stuff isn't manufactured in the cleanest conditions and usually isn't made from the greatest precursors. The media loves to hate on meth more than just about any other substance. I'm not really into meth at all, but I find it's a cleaner, calmer version of amphetamine. The methyl group mainly increases intensity and duration. I find it to work better than amphetamine for actual ADD.