W-T-B, the man with the Ducati, how can you say this? I would agree that in general, S'pore drivers are OK (I used to live in Manila, a death trap for motorcyclists), but you simply cannot ignore the obnoxious drivers who do not recognize the basic right of a motorcyclist to share the road.
EXAMPLE: Any lane can be said to have three "channels" - one the left is the channel where the left wheel of a car passes; on the right is the channel where the right wheel of a car passes; in the center is the channel which collects all of the grime and oil that is dropped by vehicles. You can see this grimey center channel very welll on the ECP or PIE - a very dangerous area to ride for a motorcyclist. Thus, a wise motorcyclist will ride in one of the wheel channels, avoiding the grime in the center. Lately, I have been riding in the left channel and many many times cars have nosed up and tried to push me into the center between lanes. I turn and stare at them and shake my finger "no", they seem to get the message. One guy, however, proceeded to speed up and came within two inches of contact - a scary experience on the PIE at highway speeds.
I suppose a lot of these problems are caused by the small scooters that dart around traffic with no regard for their own life. But, this is still no excuse for dangerous driving by otherwise law abiding drivers.
ANSWER: If you ride, ride defensively - just let the other idiot go and arrive 10 seconds later, as suggested by a previous poster. In addiiton, if your bike has the power, it is usually easy to put the problems well behind you - a tactic I often employ when things get hairy.