I'm positive most people will still be using cheap wired headphones 3 years from now. If you're willing to lay money on it, I'll take any bet you offer.
A simple press of a button on my BT headset (Sony btw, not Apple) and "Call my wife" is a lot easier in the winter than digging out my phone, removing my glove for TouchID and browsing to my wife's contact in the phone app.
A quick shout of "Hey Siri, set timer for 12 minutes" while cooking is faster than fiddling with the kitchen timer - which I had lost. Again.
Also "What's the weather like tomorrow morning" when I come home to see if I need to plug in my car heater for the night or not.
There are just some things that are faster spoken to a digital assistant (Siri, Cortana or Google Assistant) than done by tapping on a screen.
On the other hand, tapping the screen is a lot more appropriate in public than asking "Navigate to my proctologist appointment" :P
There is like 4-5 others simple interactions like that that I do in private every day and it's totally worthwhile.
"Hey siri, delete all my alarms"
Today:
- "Call John Smith on speaker"
- "What's 110 pounds in kilograms?"
Both simple, granted, but both got me what I wanted much quicker than I could have done manually.