I take a different approach. I use a MacBook for software development and using OmniGraffle for creating technical diagrams for my books. Most everything else I do on an iPad Pro. I don't mind having two work devices, especially given that I also have several Linux laptops and a few old Mac laptops.

If I were ever to travel for a year, then I could live with just an iPad Pro (I use Prompt for multiple SSH shells, so I can program on an iPad), but for regular life and work, having two devices makes sense.