You seem to be assuming that doing something is usually better than doing nothing. I believe the opposite is true in politics. It's difficult to make things better with political decisions, but it's much easier to break things or make them worse. If you can't convince a clear majority that something is a good idea, doing nothing is probably a better choice.

Presidents, prime ministers, and governors are always enemies of liberal democracy (the republic for those more familiar with American terminology). Nobody should be given that kind of power, but unless we can figure out how to run a country without such leaders, we have to tolerate them as a necessary evil.