> Ahem, it's pronounced "ustedes", not "vosotros". That's not a word.
As someone who learned Spanish in Spain, I have occasionally been "corrected" by South Americans when using vosotros. Of course, no one denies that vosotros is a word, but I have been told something along the lines of "There are X Spanish-speaking countries in the world, and only one says vosotros, so please, stop doing that and talk like us instead." South Americans with this hangup are a small minority, of course, but they definitely exist.
As someone who learned Spanish in Spain, I have occasionally been "corrected" by South Americans when using vosotros. Of course, no one denies that vosotros is a word, but I have been told something along the lines of "There are X Spanish-speaking countries in the world, and only one says vosotros, so please, stop doing that and talk like us instead." South Americans with this hangup are a small minority, of course, but they definitely exist.