i'm not sure if i should post this cuz i tend to get blasted on here about my age... but i grew up without internet. i think the biggest convenience for me is instant access to information. doing homework used to involve LOOOONNNNGGGG hours at the library, flipping through card catalogues trying to find books that were remotely relevant, and then scan-reading pages and pages trying to find something you could actually use, writing it all out by hand...
of course, i didn't know i was missing it because it didn't exist.
as far as the rest... imo, things like email and txting take way less effort than picking up a phone and having a conversation or writing out a letter because of it now being instantaneous and not really mattering too much if the person on the other end is available - but i actually wouldn't mind if i had to do it that way again.
maybe it's just because i know what it's like without, but for me it would be okay if a lot of it was gone... i feel my life is "noisier" than it used to be and that it's hard to get away from it at times.