Monarchy is a great form of government if you are the monarch.

Here is Sid Meier’s Civilization description of Monarchy – its not bad.
Spoiler Alert, click show to read: 
Rule by monarchy developed as a logical extension of the absolute rule of tribal chieftains. Many of the earliest monarchs, such as those in
ancient Egypt, claimed that they ruled by divine right. In the spread of European monarchy during the Middle Ages, however, rulership was
generally conveyed upon a leader who could most effectively raise and command an army. Monarchies are dynastic, with rule of the country
passing to the eldest son when the king dies or retires. Monarchs had absolute rule over their subjects, severely limiting the personal and
economic freedom of all citizens except for nobility and the rich upper class. Although monarchies ruled most of Europe for centuries, the
unhappiness of lower-class citizens eventually grew intolerable, causing several major revolutions. By the mid-18th century, the power of the
European monarchs had been severely limited, paving the way for participatory systems of government.

And here is the description of democracy
Spoiler Alert, click show to read: 
Democracy is a ruling system where the citizens have a great deal of control over the actions of the government, either directly or through
elected representatives. Democratic governments can be traced back to the city-states of ancient Greece and Rome. Citizens would gather
in a public forum, and each one would have the opportunity to speak and vote on issues affecting the community. This direct democracy
system was possible due to the relatively small populations of the city-states. Starting in the 17th century, the monarchs of Europe began to
be stripped of their absolute power, and by the end of the 19th century the citizens had a strong voice in government in many European
nations. Large populations made public forums impractical, so the people elected groups of representatives to carry their views to the ruling
powers. Strictly speaking, this type of system more closely resembles a republican system rather than a true democracy. This type of
representative democracy is considered the best governing system in the modern world because of the personal and economic freedom
enjoyed by the citizens.