At least I'm capable of forming an argument and supporting it.
Our progression towards constitutional monarchy since the act of union with Scotland has gone a long way to protecting the country from the sort of constitutional convulsions undergone by other countries on the continent (alright, France). On a practical level, no sovereign has withheld royal assent since 1708. Gridlock in the American system, where you have two legislative bodies and a wholly separate executive all seeking to implement your own political agenda is a good example of why the Westminster system of government is more effective at getting things done.