I've learned that "shall" is hardly used in a declarative sentence lately because it's too old-fashioned and too rigid even in written English.
However, a grammar book I've recently read says that "shall" is still used, and also it doesn't say it is old. I wonder how old it is in real situation.
Could you tell me the last time you used "shall" and the expression(s) you said/write then, and also your nationalities if possible(as I've heard compared with British English, it is rarely used in American English)?
Updated: Sorry, I've written the word "shall" as "should"... What I want to write is "shall"