This feels like the argument for why not deflationary currency. Said another way, I have a property worth X, but next year it will be worth more because money is deflationary. Why would I want to sell my house this year when I can wait until next year to sell my house and get more money.

That is inflationary. Goods costing more monetary units is inflation. In deflation same amount of monetary units buys more goods. So you would want to sell your house now if you have other options and then next year you could buy similar house and still have monetary units left over...