Why do so many people solo on P99?

[long.liam]

This is a Massively Mulitplayer Online Role Playing. Why would spend a significant amount of time playing Muliplayer game all by yourself. If you want to play by yourself, why not just play a Single Player game? Like Skyrim, or Morrowind, or really any single player modern, or old game that will have a much better Single Player experience than a Mulitplayer game.