Both my C2W bikes are used solely for commuting to work and nothing else.
It means I do not need to drive to work wasting essential resources and adding to congestion/pollution.
As well as having the bikes I also spend lots on things for them which are taxed at 20%, which I would not buy if I did not have them and I have spent far more on the extras than the bikes themselves.
Both at the same time? Wow. That is good going. The second argument on the extras is the same argument everyone uses about paying tax. I already pay plenty, why should I pay this other bit?