We have a nice changing room and showers that I use, so I get to my desk all clean and sweet-smelling .
I bring my clothes in on a Monday (bus day), so they hang in my locker all week and aren't crushed.
I get to and from work in half the time that the bus takes.
I get free daily exercise (no gym fees, and no wasting £2.20 a day on the bus).
No having to sit on a crammed bus next to someone who hasn't washed in years / no having someone coughing, sneezing and spluttering all over you and not using a hankie /no having to put up with Neds causing trouble on the bus / no having to wait at uncovered bus-stops in the rain wondering where all the buses go when it gets wet.
So - the bike is VERY attractive for those reasons as a means of getting to work.