Housing loan is a loan that we serve nearly our working lifetime. Some may be rich enough to complete it in 5 years (the usual bonding period) while some might even take till their age of retirement. With the economic cycle as we now see, we don't know how low will it go and also how low can it stay. For those of a less risk taker, then fixed rates would be good. Personally on my side, the unstable income would serve best for floating rate.