Almost 20 years ago when my family lived in Alabama, my dad was sent off to work to test and enforce construction work converting a WalMart into a Super Walmart in Sikeston Missouri, about two hours south of St. Louis. The rest of the fam tracked up there to stay with him for a few weeks. When we got there he said that the city had been been named the meth capital of the US (or the world, not completely sure). The city had paid for billboards everywhere that said things along the line of "if you suspect a household or individual is using or growing meth, report them". My dad also said that you could tell most people there were on the stuff, methed our like hell with sores on them and rotten teeth and from what he heard it wasn't just a problem with that one city but that whole area of Missouri. I never really found out as we didn't get out too much when we were there. Apparently the city cleaned up its act from what I heard, I wouldn't know though, because I have been in California the past 13 years.
Meth use used to be common some years ago but like Jind said, its more marijuana, opiates and benzos. More often than not though the common drug junkies are on that will go out and steal stuff to fund their habit, and usually tweaking during such thefts, is crack and meth. Given the area, I would imagine that it was someone looking for some way to fund their junkie lifestyle. I could be wrong, it could have been some twat fans that stalked Loomis to steal his gear.