Did you know that North Korea is also a Constitutional Republic? There is nothing inherently "good" or "bad" about that form of government. There is also nothing inherently "good or "bad" about democracy. Liberty on the other hand is inherently good.
We just happen to have had the best constitution in the history of man because it properly limited the power of government and created the most liberty for the most people.
It worked for a while.
James Madison: "Democracies have ever been spectacles of turbulence and contention; have ever been found incompatible with personal security or the rights of property; and have in general been as short in their lives as they have been violent in their death."
John Quincy Adams: "The experience of all former ages had shown that of all human governments, democracy was the most unstable, fluctuating and short-lived."
And Benjamin Franklin, upon leaving the Constitutional convention, when asked about what manner of government had been provided for us, replied, "A republic, if you can keep it."