Should I cycle? Yes! Sure you should!
5 Fs why cycling is a good idea:

Our Future

We all bear a responsibility towards our environment for the sake of future generations. Cycling is the most energy efficient mode of land transport - it is 4 times faster than walking for the same amount of energy expended.

Every time you choose to ride your bike rather than use the car you know you are making a sane decision to reduce carbon emissions and cut the levels of pollution and traffic congestion. Cycling is the greener option.