Opera and Italian Language.

Hi all, i have questions for all the italians here, dont have any purpose, i only curious about this...

1. Regarding the language of operas, im aware that some of the operas are really old (like 100 years old), and there is a possibility that italian language is evolving... my question: do italians still use the words from operas or they are all old words? can i go there to italy and say "Nessun Dorma" or "Che Gelida Manina"??

2. Do opera still famous in Italy now a days? and do your government do something to preserve these culture (operas)?

3. How do you feel as an italian, knowing that your arias are adored and sung all over the world (specially nessun dorma, its like everywhere in the world) do you feel proud or funny or what?

Dont get me wrong, i love opera, and knowing that italy is the mother of opera, im really curious about that... hope someday i can go there and watch real Turandot Live with my own eyes and ears!!

Thanks so much!