I sat right in the middle of the Curva Sud against Palermo, in the middle of the Drughi, and it was a perfectly pleasant experience.
Have you any experience of attending games of football in Europe?
Ultras get a bad Press, but are a good thing generally.
So failing to sell out a tiny stadium is perfectly okay for Juve?
Find me another team who considers themselves a club of global standing who regularly gets crowds of less than 40,000.
The stadium should be sold out every game, but there are frequently large empty areas for no good reason.