It seemed that Italian artists liked nude figures more than northern artists. Someone mentioned that it's simply due to difference in weather.
Could it be market driven? Just like in our time, violence and sex sell better on TV.
There were even so many nude figures on church walls and ceilings in Rome. One would think that the Church should be quite conservative in its taste.
Possibly it looks like this to you, because classical themes became popular? There appeared a common convention , by sometime in the later Renaissance, of indicating Greek gods and goddesses ( Apollo, Diana, etc ) by making them nude- or barely clothed with a convenient drape just sort of passing by. It lasted into the 19th century and beyond. Whether this is enough to account for your impression that there's more nudity in Italian paintings than elsewhere I would not know, but notice that while the first example is Italian, the second example is Dutch.
