Not that I know somebody that breaks everything or almost everything he/she touches but I do have a very close friedn that when she borrow something from you, she doesn't bother to take extra care or just care of it. So chances are that you won't find your belonging as such in good shape as when you lended them to her.
That why, I prefer to help her or do it for her instead of letting her borrow my stuff, unless I don't care about it.
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A person who doesn't make mistakes is unlikely to make anything.
Is there one person(s) that you know does not take care of things, and for that reason you seem to over react or be over protective when they are around your stuff?
I know for sure my cousin is pretty destructive for some reason. He breaks 70% of what he touches and thats a high percentage. Sadly enough my new wife is the same way Don't know why but they both are a bit careless. They have this mentality that if it breaks they will replace it, or find a way to cover what they did