I understand the disappointment of people who are using Unity and like it. I also like the way Shuttleworth is respecting the market & community strength:
I took the view that, if convergence was the future and we could deliver it as free software, that would be widely appreciated both in the free software community and in the technology industry, where there is substantial frustration with the existing, closed, alternatives available to manufacturers. I was wrong on both counts.
In the community, our efforts were seen fragmentation not innovation. And industry has not rallied to the possibility, instead taking a ‘better the devil you know’ approach to those form factors, or investing in home-grown platforms. What the Unity8 team has delivered so far is beautiful, usable and solid, but I respect that markets, and community, ultimately decide which products grow and which disappear.
Ubuntu is my favourite distro when I need to use Linux at work or at home (even if my company by default uses Centos/Redhat). But for any desktop I was not using Unity. It has always been too far from my likings.
Let's see what will be the Ubuntu future.