What was so bad about gnome and what was so good about unity?
closed as not constructive by Ringtail, fabricator4, hhlp, fossfreedom♦ Dec 14 '12 at 13:31
As it currently stands, this question is not a good fit for our Q&A format. We expect answers to be supported by facts, references, or specific expertise, but this question will likely solicit debate, arguments, polling, or extended discussion. If you feel that this question can be improved and possibly reopened, see the FAQ for guidance.
As to the reason for the splitup:
You can read in detail at: http://www.pcworld.com/article/208708/article.html
They changed to Unity to make it more touch friendly.They decided to make the whole interface touch friendly because of the increasing use of ubuntu on mobile platforms and as Tv interfaces and for other devices .