Totally agree, we can only rely on ourselves compared to other people, but all decisions depend on each one because the assessment of trust is very subjective based on each other's opinion, the important point is who can you trust your bitcoin private key and he never betray you, the answer is in your mind so only you can make that decision. But remember that whoever has the private key of the wallet owns it.
I don't really know why the OP is trying to hand over his private key to some one, I don't really think it make any senses trusting someone with your private key, if you can give your private key to anyone, then you are handling over all the money in the wallet to the person. Incase if there is any critical condition and the OP thinks someone needs to know his private key, then the OP should check the most trusted person around him, nobody will select for him on the forum because nobody knows who he really trust, sometimes you might trust your friend more than your family member.