Matteo Messina Denaro, the last head of the Mafia, recently arrested and about to die of cancer, led a life that, were it not for the nefarious consequences of his actions and role, would be considered quite ridiculous, certainly not comparable to that of the Mexican or Colombian drug lords: he had little "disposable income", lived in a small apartment, and frequented a few prostitutes, energized by Viagra.
Bernardo Provenzano, who before Messina Denaro was the head of the Mafia, lived for at least a decade in a farmhouse, largely alone, communicating with his "picciotti" with "pizzini," small pieces of paper with something barely comprehensible written on them: when they arrested him, he looked like an elderly man in rough shape.
The Camorra has followed a similar decline, mostly due to internal fighting in the 90s and early 2000s, while the 'Ndrangheta, the Calabrian mafia, is unfortunately still strong, in Italy, Spain, Central Europe, Canada, Australia and South America. The books of Gratteri on 'Ndrangheta are an interesting read.
I hate organized crime as much as one can hate organized crime and "mafiosi", and I would still to this day favor and support the iron fist of Mori, the police chief sent to Sicily a hundred years ago, who used rather, let's say, energetic methods to eradicate the mafia. I would give life imprisonment to mobsters, like one gives candy to kids on Halloween. Generously. But the Mafia and Camorra are no longer as powerful as they once were. And I hope they will be even less so in the future.