To be fair, it's arguably easier to do anything right if you have a benevolent dicator who knows what's best for society and doesn't care too much about whether

To be fair, it's arguably easier to do anything right if you have a benevolent dicator who knows what's best for society and doesn't care too much about whether people disagree. The problem is finding anyone who's truly 'benevolent' or would stay as such once they've got power. It's the same issue we see with a lot of systems; in everyone was a perfectly rational, decent person who only did what was right they'd be a utopia, but that's never the case.