Apple's Curious Reasoning Why the Mac Doesn't Have Touch
We make the world’s best touch computer on an iPad. It’s totally optimized for that. And the Mac is totally optimized for indirect input. We haven’t really felt a reason to change that.
Like okay, but I can use my iPad wonderfully with a keyboard and mouse as well as touch. If the iPad can be "totally optimized" for touch, but also include world-class support for indirect input, then you would think it stands to reason macOS could pull the same trick in reverse.
Maybe I'll never win this war, but I still believe we'll get touch in a Mac sooner rather than later.