That is not an argument - that is your opinion. While Santon did impress against Roma in 08/09, his later performances at both Cesena and Newcastle have shown that those games in the beginning were exceptions to the rule that is: Santon is not good enough to play at Inter. (This is, of course, also an opinion)
Lucio has been doing far worse this season than Ranocchia ever has. Who'd you prefer to play - an old player who is only going to become worse, or a young player who is likely to improve from his mistakes? He is 24 years old. He is born in '88. He is Italian, but that only seems to matter to you? Funny how his critics are insisting on mentioning his origins as a motif for his defenders.
Ranocchia has potential, and as Pajo beautifully put it, a defender needs consistency and experience - these two attributes are acquired through playing-time. He has been unlucky with his injuries lately, but I remain convinced that Ranocchia will prove all of his critics wrong, if only he gets sufficient minutes on the field.
Now what is this? Has he really shown NOTHING? Has he shown so little that it requires of you to use capital letters? He has shown plenty, especially in his first six months. 'He always leaves the defense like a madman' - I do not agree, as I don't believe that one run every two matches qualifies as 'always'. I believe you're mistaking him with Lucio.
Mediocre attackers as those who play in Genoa, Catania, Roma or Palermo? Let's sell Lucio and Samuel then. Speaking of Samuel - is he fast? No. Has ever been fast? No, not really. Is he a great defender regardless? Yes, he is a great defender regardless.
Please, do not try to enlighten me on my motifs for defending a young, promising defender such as Ranocchia. I really dislike people who do that.
Anger is okay, anger is acceptable. But the amount of irrational posts (and posters..), not only in this thread but in this whole forum is so large, that any sign of such should be attended to.