Your relatives have bought land, house, apartment and they tell you - It will be difficult to buy a house the more you delay as the prices will be unaffordable. Maybe you also read this in newspapers. And you start to get nervous and go around Saturday/Sunday on house hunting. Maybe you don't need one but with so much of Real Estate noise around you may think - "If I get a good price, I will buy it". So you create a demand which probably was not your need but a want.