Yes that would be a nice profit, but to hope that your house price wil double in 5 years is pure speculation. True, you'll have a nice leverage, but when specul

Yes that would be a nice profit, but to hope that your house price wil double in 5 years is pure speculation. True, you'll have a nice leverage, but when speculating the leverage goes both ways; if your house price drops 50% you'll see the other side of the leverage. The article is not about short term speculation, it is about long term expected returns. Which tend to follow the inflation and the interest rate.