There are a lot of apps where you want to be on the desktop and mobile (with your data in Le Nuage, say). I've done a fair it of that kind of Mac/iOS developme

There are a lot of apps where you want to be on the desktop and mobile (with your data in Le Nuage, say). I've done a fair it of that kind of Mac/iOS development (although not in the last couple years). It was always super annoying to have to isolate your data and business logic in the shared code part, and then do you UI and platform code in two totally different ways. I think a.) every Mac/iOS developer doing that kind of "phone and desktop" type of app wants this, and b.) this way makes it easier to do "mobile first" which seems to be what most people want to do these days.