The answer depends on how much risk you can tolerate. So, it's very personal. I think that being over leveraged is a huge risk, some people think that using other people money is less risky. I don't know Canadian laws, so I can't suggest anything there (interest free loan? But then you have to "renew?"). I have about 70% equity in my house and some might say that I can invest that in something. Yes, I could, but it gives me a piece of mind to not touch that eqiuty. It might change one day.