I could commute to the office every day with nothing but the shirt on my back and the phone in my pocket if my work-provided device were my phone. I would not need a backpack or briefcase, which means that for any errands or dinner plans after work, I don't fumble with a backpack. I already leave my preferred keyboard+mouse at my office desk.

If I needed to fly to another office for a business trip, same story: I could sit down at any desk, grab a spare bluetooth keyboard from IT (if there isn't already one on the bookable desk).

If I'm over at a friend's house for dinner and get paged, I could just ask to sit down at their desk and plug my phone in.

I would love to not have to carry a laptop around to all the places that I do today.