Agree with you on outhouses & corn cobs (though I've never used a cob for that purpose, hope I never need to!).
Smartphones? Nope. Don't see how it would add anything but clutter to my life. I have no desire to send or receive a text message or use somebody's aap. Don't even want to be reachable anytime, anyplace.
Then just turn it off when you don't want it.
I like nothing better than to talk to my kids or my siblings if they call out of the blue. I like the convenience of calling up a video of how to replace a window regulator on a 2000 Mercury Marquis right there in the front seat. I like ordering parts for the car and having them ready for pickup as soon as I walk in the parts store.
I like the GPS maps when driving, or the compass when hiking. I like the ability to see an aerial view of the park I'm in to help get my bearings.
The ability to look up any tidbit of information at any given time.
I used to think GPS units were stupid, and a paper map was the best. I finally realized that GPS (phone or stand alone unit) is just a really good map, with so much more detail than a paper version. Go for a drive, find a good place to eat, find a different route home. Great fun. Updated automatically with new roads, detours, shows alternate routes when it detects delays on you planned route. Good stuff!
I used to think the encyclopedia was the best way to find information about a lot of different things. The phone and search engine are much better than a printed encyclopedia. More information that's up to date Vs an encyclopedia set that's a decade old.
As far as clutter, I don't have a map in my gloveboxes anymore. I don't have encyclopedia sets on the shelves. I don't have a giant desk phone or wall phone or a cord, or a phone in each room.
Heck, I can call up bathymetric maps when I'm fishing of most lakes.
And most importantly, when a loved one (or myself) is having an emergency, not only can we call for help, we can pinpoint locations for emergency responders.
Nope. I'd never want to go back to landlines.