I loved PoF. I consumed the whole of Personal Story, then Living Story 3, then Living Story 4... Each took me a day to complete. After that I worked on the Griffon mount, which took me less than a day. All in all, it was the most dedicated I had been to a game in years. But then... I stopped. I had begun to lose interest and started playing less and less... What could it be? Well, after some thinking, I was able to pinpoint the problem: the lack of solo end-game content.
Now don't get wrong: this game is one of the most solo-friendly MMORPGs on the market. The problem isn't that there isn't solo content -- it's that none of it is at end-game. The only options the solo player has at end game are Living World, which is a few hours' worth of content every 90 days, and map completion. Things that require a group are: dungeons, sPvP, WvW, Fractals, Raids and World Bosses.... so most of what is available at end-game. So while journeying through Personal Story and other first-timer content is an experience rife with possibilities, there isn't much to do alone once one reaches the end game, if one is to not start over.