Renters rejoice! OK. If you’re going to stay here for a decade or more, have the financial wherewithal to do it and found yourself a bargain? Fine. Buy away.But for anyone else thinking of buying a home, this graph from The New York Times should make you think twice.What it measures is a city’s rent ratio: the purchase price of a typical house divided by the annual rent of a similar house. If the rent ratio is below 20 it’s better to buy. Above 20 and it’s better to rent. So what’s Seattle’s rent ratio? A 28, fifth-highest in the nation.That sound you hear is the guys at Seattle Bubble yelling “told ya so!”