Yes, I'm an 'old fart' and I've spent my time in 'gutter talk' (in the times between Jr. Hi and college graduation I worked at a bakery with career bakers - they DID have a vocabulary!).
In the past 15 years I've spent time in social settings (yeah, mostly 'craft beer' bars and 'comedy clubs') - the 'language' is now something that WOULD 'shock a sailor' - as my Mother would say. The 'F' bomb is no longer a bomb - more like a 'mild burp.'
And yes, it IS a decline in social decorum - accelerated by changes in public mores, social networks, TV, and what's accepted in homes.
That is the way society is shifting - and it is indeed unsettling to some.
And I'm with you - it ain't good.....