Look, personally, I understand because I am also an old-fart, like you. However, I can see also see how this is a technology problem easily solved with technology. So, I see you a gripe and raise you four:
-Why are you watching movies in the dark with total strangers, WHEN YOU NO LONGER HAVE TO? Home theaters are cheap these days, thanks to technology. Take advantage of it.
-Why are you still paying a cashier? You should be paying ONLINE. You are old. You have less time remaining than everyone else, and your bones are brittle. When you go outside, make sure it is for a reason that is important and not a result of being "stuck in your ways."
-There are plenty of idiots on the road. How do you know that the texting is making them any stupider? It could be making them drive better, for all you know. They are idiots, nonetheless, irregardless of their texting habits. Get a dashboard mount for your cellphone, install Daily Roads, record evidence that they are too mentally slow to drive, and forward said evidence to the local authorities. Make the world a safer place.
-Use your smart phone to record people being "rude" on their's. Upload to Youtube. Tweet it. Make it go viral. Hurt them where it counts. Just beware of old-farts mistaking you for "part of the problem."