There are pros and cons of both:
Bike
====
(+)Cheaper, less maintenance cost, faster to commute (especially
during traffic congestions), less parking charges, less toll (or
ERP), nippy, fun.
(-)Man on machine rather than man in machine.
Tropical weather tends to spoil the fun.
Cannot carry much.. maximum one passenger or some goods.
Car
===
(+) Safer, stable, no need to worry of rainy days, spacious,
comfort (stereo, aircond, cushion seats, VCD player), large boot
space
(-) Expensive, high maintenance cost, fuel hungry, high parking and
toll charges, high insurance and road tax.