Polybius

I have great respect for Cicero, but the social , political, economical climate of the first century had socavated the foundations of the republic
Polybius like Aristotle, clearly pointed that system of goverment are cyclical.
From the rule of the aristocrat, to the rule of tyrant or king to the rule of the republican democratic model and so on until the wheel goes around again.

Rome first century politically, the wealthy controlled the political process,
( they purchased the offices , sounds familiar) ( Roman culture had experienced an aculturation of the Hellenist culture and the famous ancient Roman gravitas were on decay at least among the elite)
Cheap labor and big business, destroy the middle class , the farmer -citizen, the urban worker and the agrarian farmer were practically displaced by Slave labor , unable to compete.
( Sounds like America ? )
Polarization of Wealth, extremes rich and poor?
Insecurity , instability and lack of trust in the elected officials
And embrace of aliens customs , beliefs and way of life

( The development of a kind of multicultural state , over the previous more clear cut Roman identity , popularity of foreign languages such as the Greek language compete with Latin and became the lingua franca in Rome's domains

( sounds familiar ) Identity and Political Crisis.

So Julius Caesar was able to understand the gravity of the crisis and the need for a change in order to save what he could of the older Rome. His ability to clearly perceive and read the signs of the system decay and his absolute love for Rome , her culture and ideas , drove him to plan a change which prevent Roman decay and could save Roman's culture and world status.

Cicero , intention was good, but the crisis was too deep to allow such Republican rescue so Julius Caesar set the pace that Augusto followed and for a while Rome was able to succeed and to bright as the Morning Star of the Mediterraenean Sea