Since this is a business forum...here goes:
Instead of complaining about it - recognize it as a money making opportunity!!!
If you see that they are on the phone all of the time - monetize it
Right now advertising on FB is so cheap...like when Google Adwords first started and you could get words like porn for $0.05 a click
Snapchat and Instagram are the next two - if you haven't figured out how to monetize them...you are behind the curve
Make money off those duckface
And for those complaining about the couple - before the smart phones - they would have sat their not talking to each other....again...just recognize it and make money from it