Tell that last line to those livng in Russia, Syria, Venezuela, Turkey etc.
A government and its structure can often be as bad as the worst monarch because it pretends to be what it is through public support.
Think of those happy lands where opposition candidates are jailed and otherwise prevented from standing. Some free elections eh? where only the party in power is allowed to stand. Reminds me of Henry V and that line about sheathing their swords for lack of agument.
Well, nothing's perfect. But I don't think most people want to go back to monarchies.
The problem with countries like Russia, Venezuela, etc is that they don;t have a solid and respected constitution as America does that protects individual rights. Also, America has separation of power between the Executive (President), Legislative (Congress) and the Judiciary, each with its own powers that are often in conflict with the other branches. That helps keep power from accumulating in one branch. That's unlike a parliamentary system where the executive and legislative are joined at the hip sometimes even having the judiciary connected as well.
One additional check is if the branches are from different parties. Some would say that creates divided government which creates gridlock. Frankly, that;s good. Making it hard to pass laws leaves the public more free to go about it's business without government interference and nosy bureaucrats. We stay freer.
Here's a good essay on the three branches of American government and checks and balances to limit governmental power. A monarchy wouldn't and couldn't operate this way.