Having been a die hard Ubuntu fan from day one until they forced Unity on us, I'm now using Mint as my day to day OS. The problem with Ubuntu is that they are trying to do a Microsoft and have their fingers in too many pies. They need to get back to the Nix mantra of do one thing really well.
I think it all started with Ubuntu One, they tried to diversify and started losing focus. Then they turned the desktop into a toy with Unity. M$ followed suit with TIFKAM.
Now they're trying to do phones. Shuttleworth is trying to fast track to becoming the new M$ and he's doing a great job of it. Alienating users/customers and trying to be all things are not traits that sit well in the Nix communities but are SOP at Redmond.
What next? A Ubuntu console to try to compete with the Steam box?
Screw you Shuttleworth, you changed Ubuntu into an entirely different beast to that which attracted so many users in the early years.