Once upon a time, not too long ago, there existed a desktop environment called Gnome 2. Everyone looked upon Gnome 2 and saw that it was good. This was a time when most everyone was happy, and the children did rejoice at the ease of use and productivity values of Gnome 2. But those days came to an end. The evil development team did decree that Gnome 2 would be no more, and that it's replacement would herald the coming of a new age in desktop computing, and shall leave no man wanting. Only it didn't happen like that. Gnome 3 was unstable for many, harder on resources and brought with it a number of silly design ideas revolving around the principle that removing features was what the users wanted, that they wanted to jump through more hoops to do the same thing. But the Linux community was not stupid. They saw through this disguise, they saw the evil Gnome 3 as it was - a tool to hamper the human race. Some distributions saw no hope and gave in. But some decided to fight it. Some, like Mint, decided to stay put and stay firmly in the haven that was Gnome 2. Others attempted to master Gnome 3 and to meld it to their image. But Gnome 3 was a beast that they could not control. Ubuntu decided to try to use it, and Unity is what they came up with. Unity took over Ubuntu, changing it from a brilliant starting point for beginners to an abomination even worse than Gnome 3 itself.
Please don't take that seriously