In that case, I'm glad only you said it -- I never did. Government is the art of the possible, and politicians generally know how to avoid being thrown out of office. Avoiding decisions that have no public support, choosing only those that have some public support, that's something politicians are good at. It's the political version of crowdsourcing.
> And assuming you mean democratic governments this makes even less sense.
You serious? Finding out what the voters want is even more important in a democracy than it would be in a totalitarian state. Political opinion sampling is why France and Japan have high-speed rail, and it's why the U.S. doesn't.