If the Tories and Lib Dems fought together, they'd keep their ministerial offices and limousines, and continue to do the right things for the U.K. But too many backbenchers in both parties yearn for Opposition, preferring hallucinogenic ideological purity and political irrelevance to the mucky reality of governing.
Conservatives are wary of change. We have respect for things that have lasted a long time and have been proved to work. When things need changing, we should make the changes with respect to all the reasons why those things worked originally as well as the reasons why amendment is necessary.