I have for my car, and it was pretty straightforward, I have not had to on a house. It can be expensive, but then again, you would have to do the calculations some people it's worth, others not so much.

Sure, buying a house when prices are low is just objectively better, but waiting for the perfect time to buy a house could have you waiting for years. Perfect is the enemy of good as the saying goes

I'm not saying that this isn't happening. What I am saying is you could end up waiting forever for it to stop, and even if it does, you have no way of predicting if prices will actually fall substantially.

That's a fair enough reason to wait, as they are a little more predictable. Though it also depends on you ability to refinance. You can get away with a a slightly higher rate now, knowing interest rate will fall and you'll be able to refinance at a better time. Again it all depends.