One reason Sicilians tend to identify with Sicily first and Italy (a distant) second?
The same goes for Veneto in the north or Puglia in the south.
Italy is a young country - it only celebrated its 150th anniversary in 2011.
Despite the successful export of the "Italian restaurant," the idea of a unified Italian cuisine is something many Italians reject.
Instead there are regional dishes, sometimes with tastes as different as you'd find between countries.