My weed dealer when I was in highschool was a jackass wannabe-surfer (never saw the ocean) whom I didn't particularly like, but was totally harmless. I'd much rather betray him than a friend. I know it happens sometimes, but the stereotype that weed dealers are/were often violent criminals is a bit silly. I'm sure if you were buying in bulk from organized crime things could easily get dicy, but a teenager buying a dimebag from some dude? Probably not much risk there...
Absolutely. Particularly, being reasonably sure I'm not breathing in toasted pesticides is a huge plus to the legal industry in my view. I generally trust that kind of stuff to be safe on raw fruit, but god knows what that stuff turns into if you burn it a little.