I thought the same about my tool box, just decades old dirty car tools and super frickin' heavy to run off with, nobody will bother taking them. Then when you price up replacements it was £300 and a broken sense of trust in my neighbourhood.
Add up the cost to you (not just monetary) of buying a new dishwasher, washing machine, TV, computer, sofa ('cos thieves going to piss on it) damage to the wall where the TV was ripped off and the door frames where the washing machine was bashed through, and the effort to replace all the cards in your wallet and the door locks. It's very easy to underestimate the value of your belongings.
By the way, I realise this doesn't change the fact a lot of people expect a key. I'm just expressing my view.