Religion, educational system, philosophy... I can't see how Greeks were too different from Romans.
The Roman state religion did feature the Greek pantheon of 12 gods with different names, but you must remember that this is true of all Indo-European gods. Zeus = Jupiter = Thor [Dzeu-Pator -- "Sky Father"] Now are you going to claim that Thor was borrowed from the Greeks as well?
Then there are the multitude of Roman
numina, the faceless, characterless gods of the Etruscans and the Latins; these didn't have human faces and bickering human relationships, and the most solemn oaths were sworn on them. Is there anything like that in Greek culture? Hell, when an official declaration of war was issued it was in the
Temple of Bellona (chthonic Italian/Roman goddess), and not the Temple of Mars.
Other than the 12 Olympians, no Roman gods had a family or an anthropomorphic form or history.
Then there were the
Lares, the guardian-gods (of the hearth, fields, boundaries, doorways, crossroads). The Lares Penates guarded the Roman home and its walls.
The ritual of
Evocatio was thoroughly Roman in character. Who has ever heard of a Greek general literally sacrificing himself in battle, that his army may be victorious?
The Ludi Romani and the Lupercalia, and many others, were purely Roman/Italian festivals and events.
It is indeed true that Romans took much from Greek education after the conquests of Macedonia and Greece. At the highest levels, though, Greek students went on to study philosophy and ethics, while Roman students studied law and oratory--two more practically useful subjects, wouldn't you say?
I'll concede on philosophy. That is basically just sitting around and doing nothing, which everybody is pretty similar at.
@Basileus Giorgios How can you even say that? Rome was never conquered during the entire ancient time period, and Romans did not speak Greek. It was 150 or 200 years after the Roman Empire fell that the Byzantines made Greek the official language, which tells you how well-grounded Latin was, especially in the West.
Furthermore, the Spartans too weren't a Hellenistic state. Alexander never even conquered them, and they didn't accept eastern cultures--and remained a backwater, as they had been since Corinth's hegemony, until Rome conquered them.