Top reasons Im still playing:
1) My sub is not ended yet. After that, it's likely I wont be playing anymore
2) The stories and the way quests are given (dialogues, voice acting)
3) the universe/lore
4) Star Wars
5) Classes
Reasons why Ill quit soon:
1) EA/BW breaking promises, one after another: feeling of a unique adventure (what happened to "You'll never have to kill the same NPC as thousand others"), character transfer from and to any server to compensate for the queues at launch, customisation, influence on the universe (seriously... we're supposed to "leave our mark in th galaxy", yet nothing we do has any meaning or consequence...)..
2) That "one man army" feel. It's just ridiculous sometimes... You feel like the Republic/Empire is filled with morons, since even your toon lvl 1 can "save the day" where seasoned soldiers just get slaughtered...
3) Probably the worst customer service in the world. Sorry, but copy/pasting pre=formatted answer depending on a couple keywords is NOT a customer service. Just give us access to the DB and we'll do that ourselves...
4) PVP: limited to BG's (at least when you're not lvl 50...and even so... open pvp is barely existing), and there are just too few BG's to be fun...
5) No real influence. You can be the worst sadistic monster and still be a jedi knight... It has no influence, in the end. This is a general issue in BW's games... In Mass Effect, you can choose paragon or renegade, the NPC will still justify your choice and claim you're a great guy...
6) Linked to 5: no possibility to change faction.
7) No possibility to change advanced class. If your ealise you don't like the class you chose, in the end, you can only reroll... Thats a pity...
8) Planet design. Honestly, apart from a couple planets (Hutta, Voss, ...) I dsilike most planets... They lack... caracter... or personnality...