being a long term Amazon customer doesn't automagically make someone more trustworthy. The question still remains, who is responsible if a package disappears? That question is relevant for both the customer as the delivery person. What if I drop off a parcel, but the person receiving claims to have never received it and never to have seen me? Would I be on the hook for lost parcels if I where to deliver packages? If so, better think twice before coming even close to something like this
Also, I'd claim long term Amazon customers are more likely to be cough potatoes prone to NOT going anywhere and thus NOT being the perfect person for this sort of thing.