The thief is in the wrong and you are quite silly for leaving it unlocked. Im certainly not having a whip round to give you your money back.Let's say you left your house unlocked and someone walked in and stole all your money.
a) The thief is in the wrong because stealing is a crime.
b) You are in the wrong because you left your house unlocked.
I can remember a time when most people would have said 'a'. Nowadays, it seems that a lot of people say 'b'. I think that's a pity.
It is a pity. But we are no longer in the 50s.