Vito's world was at peace. Who knew better than he that involving himself in the drug bsiness might alienate his political and legal support? Why take that chance? Why disturb that peace? In the real world, he has been proven correct. Made guys are turning state's witnesses when threatened with long drug-related sentences.

Yes, he suspects that there's more to all this than just the drug proposition. He says as much. That's why he sends Luca to check things out. And he was right. Barzini wants to be No 1.

But Vito was no better than any of the other hoods portrayed in the film. He supported, directly or indirectly, all kinds of illegal, illicit, and immoral activities. He murdered when those activities were threatened.

"Generosity. That was my first mistake."
"Experience must be our only guide; reason may mislead us."
"Instagram is Twitter for people who can't read."