I remember when I paid off my housing loan many years ago, the interest rate that the loan attracted was 5.1%. That was pretty pricey. For a few years now, interest rates have been very low and, so, it has been pretty cheap for people to borrow money to help pay for their homes.
Personally, I am holding back from doing partial or full capital repayment on my current home loan because even with the sharp increase in the 3 months SIBOR in recent months, the effective interest rate on my home loan is still below 1.8%. The cost of having liquidity is not exhorbitant (yet).
Even if my investments are only able to generate a dividend yield of 4.0%, financially, I would still do OK. So, arbitrarily, an interest rate of 4% on my home loan could be the tipping point for me to want to pay it down at a faster clip......