I think its a shame that the linux desktop software is so fragmented.
Sometime, I fantasize about a parallel world, with a parallel linux trovalds working solely and maintaining THE linux desktop manager
That said, gnome has the largest chunk of the market share. Sort of like the chrome of Linux desktop. It has all features I've ever used in any desktop environment (to be fair, after Windows 98 I only used Linux and Mac os) But each person will enjoy a different UI, I guess.