Marco Arment makes a great case for why Apple should continue developing the Mac Pro:

The world has never seen anything like macOS, and nothing will truly replace it. If we’re forced to move to something else, it’ll be painfully, inescapably, perpetually worse.

Keep the Mac Pro alive, Apple, so none of us have to make that choice.

The rest of the lineup is great for almost everyone. Almost. But please don’t abandon those of us who truly want or need the best computers in the world, because if they’re not Macs, they’re not good enough.

I’ve never owned a Mac Pro and I probably never will. But I think it would be a huge detriment to the community if Apple discontinued its development.