Haven't RTFT but I don't think YABU at all. I first bought in 2009, and although lending criteria tightened then, there was still a drop large enough that we could afford a (previously unobtainable) small house. Be aware that a crash will negatively affect many people as well as the wider economy, however, obviously you are your main concern and I don't think you are being unreasonable for hoping for a drop.