I will have to tell that to the judge who handled my aunts probate case then...hmmm...he who ruled that the contents of the house belonged to the homeowner unless proof could be provided otherwise.
And yeah..there was that time when my house got robbed in the middle of the night and the strangers who robbed me tried to claim that they were just moving out and taking their "stuff"...in that case shouldn't the cops have made me prove it was my stuff before they brought it back into my house?
While I appreciate what you are trying to do, there is the whole "burden of proof" issue. If you tell me that in the case of a deceased that the burden of proof that the contents of their house belongs to them is on the estate, rather than other claimants, then I have to believe you even if my experience is to the contrary, but its certainly not logical at all.