Republic is the best government form, change my mind

I'm serious, I'm not here to provoke you or to troll you, i think that Republic is the best government form and I would like to know why you think otherwise.

I believe that the inherited political power is stupid. Because no matter how stupid, ignorant, insane, violent a person is or how hated he is by his own people, he have to rule a nation for his whole life because he is the last old king's son. And citing all the defects of the republic or of democracy in general by saying things like, that voters are stupid and politicians are corrupt does not change things: even a king can be stupid and corrupt, but nobody can legally take away his power, while an imbecile politician at the next election may not be re-elected. Nothing is perfect, but the republic certainly has fewer defects than the monarchy. Believing that a monarch is by definition a good and noble person of soul, incorruptible and that he does everything for his own people is a naive idea, perfect people do not exist. And it is also an idea that completely ignores the history of humanity, full of monarchies ruled by violent, hypocritical, warmongering, foolish and greedy kings; you could also quote me some kings who have only done good things, and I could mention as many that they only did bullshit. A king represents only himself, while parliament and the senate represent the will of the people, this had already been understood by the Romans, the most civilized people that ever existed, they abandoned monarchy after the seventh king and forever remembered it with contempt; and from the greatest Greek thinkers like Plato and Socrates, who were certainly not fans of democracy, but they understood that the centralization of too much power in the hands of a certain person just because he is the son of the old king is harmful. And I don't even like parliamentary monarchies where monarchs have only formal powers, because although they have no inherited political power, they can still spend state money (therefore people's money) for themselves, such as organizing a sumptuous wedding in a beautiful castle with luxury food while in the nation there are poor people who beg in the streets. Do you believe that the monarchy is beautiful and right? So you should go to live in North Korea, a nation in which, starting from Kim Il-sung, heads of state must belong to the same bloodline, de facto a monarchy.