Would you drink muddy, rancid milk?
No, of course not. It is filled with dangerous and unhealthy impurities.
Same with governments.
Utopian governments are, by definition, more perfect. Utopian governments have the impurities removed. As with the milk, there is a big difference between the pure and the impure.
There is a reason why this happens. It’s probably related to greed and ignorance. Each keeps the other in place. Lack of proper common principles is both the symptom and the cause. Too often greed has been confused with success and conventional wisdom has been confused with intelligence.