1) You can't control what people are going to do with what you teach them. It's important to give them as good a chance as possible to make the right decisions, but some will crash and burn.

2) Those show up when you're karmically and evolutionarily ready for them. Yes, it can be overwhelming, but once that stage gets past it's very helpful to know where you've been and why you're here.

3) That's something that happens if you have karma to work off. What you have no control over generates no new karma.