Faithful?

I will never understand the inevitable italian unfaithfulness. I understand people have affairs and I understand it is not only Italians. One can argue Americans are one of the frontrunners when it comes to having affairs with such examples as AshelyMadison.com and similar sites. What disgusts and baffles me is how widely accepted it is here. The women seem accept it and go on with their lives standing beside their unfaithful but always loving husbands.
Last night I was told that a man cannot be true Sicilian without having a mistress regardless if he lives in Italy or not. It is this statement that burns me to my very core. Granted I do have a skewed view of life in Italy. I am in a small town where everyone knows everyone and the only excitement is in the summer when the locals get to sample fresh and "exotic" meat. 
In my opinion this is a sad existence. How can anyone live freely and happily when they have to either deal with the pressure of juggling so many women or the women have to live knowing their husbands cannot be fully satisfied with only them.
Further, because of this lovely converstation I had, it almost seems as if there is a pressure put upon these men to prove they are "truly Sicilian" and if they do not engage in having an affair, then they have failed not only their culture and their gender, but their destiny as well.