I disagree with you on this. I know it's risky for one to trust the next person when it comes to what has to do with money, but then again, if you don't trust anybody, do you even trust yourself? And if you are a married person, you, as the husband or wife of you, don't trust your spouse enough.
 
Why get married to them in the first place? To some extent, we need to take the risk of trusting one or two of our family members. Besides, all those wealths that you are indirectly making are supposed to be for the family, so what's the point of totally blacking them out?