I'll bite. Crafting is pointless and GTN is barely usable. Datacron hunting has nothing to do with endgame, they're right there in each planet you visit on your way to 50. Dailies are just as boring as they were in WoW and you get all the rewards they have to offer withing a couple weeks of doing them anyway. There is no achievement system or side activities, events, anything at all.
That leaves us with PvE and PvP. PvP is buggy, plagued by unresponsive controls and unrewarding. PvE is ridiculously easy when it doesn't bug out if you are in an organized guild. If you are not in an organized guild, there is no system to facilitate socializing and grouping. Finally, it doesn't take more than a couple weeks to get fully geared through PvE either.