Seems like its a less explored part of the "I'm 50 what now ?" problem. Its 1 am, theres literally 10 people on my server at the moment. All my dailies are done, and no chance of finding enough people for pvp or pve. My companions have been sent out to do their tasks. So I ask you, am I supposed to just go offline or level an alt ?
For the sake of comparison, in WoW the most prominent answer now would be crafting. I would either be fishing, gathering mats, doing archeology. As crafting in this game has been stripped down to a series of buttons to press every 30-40 minutes, it has also removed a major way people can spend their free time.
Between the dismal populations on EU servers, a poor crafting system which provides neither flavor nor joy, and a series of dailies that were completed in peak hours, a player is left with nothing better to do than close the game and wait for the reset.
Its 1am , what now ? Go to the forums, I suppose.