A couple of weeks ago I get a heck of a thread going asking about how film is made. Maybe this will be another outta the ball park question.
We all sort of fixate on the granularity and perceived sharpness of negatives. Lordy, the number of Pop/Peterson's/Modern articles showing grain patterns at huge blowups that I've scoured! And probably you, too. I still see the same topics here and with offerings of teensy little negative portions blown way up. In the meantime, for a given speed of film, granularity has gone way down over the years, and I'm not even getting close to Delta/T-grain films in my question.
So, my question is, "Just how important is granularity and sharpness to you in a practical sense?" If you made nothing larger than 3 1/2 x 5, you could shoot 3200 speed films all day and no one would say, "Wow, how grainy!" (I'm not referring to tonality, just grain and sharpness.)
Speaking in terms of 35mm, just how important is this anymore? At what size and viewing distances do these ancient concerns rear their heads? If you never make a larger print than 8x10, should you just ditch the concern? 11x14? 16x20? (Probably!)
And once into MF and LF, why is it a concern at all if you aren't making billboards? (Which actually isn't very high rez due to the viewing distance. I have a friend who has a friend that had a 35mm neg used for a billboard!)
Let the opinions issue forth!