When we left our last house, I deliberately left it uncleaned. I hadn't been planning to and in fact am normally the sort of person to leave a nice bottle of wine in the kitchen to wish the new owners well.
BUT we had the most needlessly stressful, miserable house selling experience ever. Our asshole buyers dicked us around at every turn, insisting on money off for this, money off for that all because they didn't get a proper survey done at the right time. That was after they changed their mortgage provider THREE fucking times for who knows what reason, wasting months and months.
We were in a position where we HAD to move (we were moving cities) and the buyers knew we were committed to buying in a new area and they totally took advantage of us - insisting on a £20K reduction in price the day before we were due to exchange for example. They also used to walk past the house with big groups of people and stand outside and point in our windows while we were STILL FUCKING LIVING THERE.
The stress and crap we had to endure from them went on for months and I firmly believe it was the stress of all this that caused me to miscarry our much-wanted second child.
Then the day before we were due to complete, with packers in and the house in disarray, they insisted on a 'pre-completion inspection'. I went fucking NUCLEAR at the poor real estate agent who had also been completely stressed trying to get the deal off the ground, but he talked me down and just persuaded me to go to the pub for an hour while he took the pricks buyers around the house to convince them the walls were still all up and the doors were still in same place or whatever the fuck it was they were worried about.
So the day we left the house, I refused to do any cleaning and took great delight as I surveyed the dust and crap left behind (I didn't leave rubbish behind of anything, just didn't vacuum or wipe up any marks).
And to the new owners, if you're reading, I WISH I could have seen your faces when you walked in to your new home. Oh, and we would have taken £20,000 less than what you paid. Assholes.