I was initially very impressed with Star Wars the old republic, but lately it just seems EA/Bioware is deliberately trying to kill the game.
I haven’t really played the game for over a month and not sure if I’m going to again, maybe if they implement character transfers between servers I’ll give it another go.
There are several reasons why I’ve stopped playing:
End Game PVP was broken, then they broke it some more, then they removed it
Battle of Ilum which is supposed to be the end game open world PVP area was totally broken, so at first everyone were just farming the objectives in turn.
Bioware tried to fix this but in doing so they screwed over all of the servers that had uneven faction balances, so on our server the empire could take over the republic spawn point and spawn camp people, many of who was unable to leave the pvp area. This also made some people gain pvp rewards insanely quickly and pretty much pissed off all of the PVP’ers in the game.
Horrible support
In WOW you actually got a game master to appear, and the game masters KNEW the game, and you could actually have a conversation with them. In SWTOR you file a ticket, this ticket is almost never fully read by a human, you just get a pre-made response that touches upon the theme of your question, but is not an actual answer.
Also some of the support people appear to not have played the game, and are unfamiliar with even the simplest MMO mechanics of the game they are offering support for.
End game PVE is buggy and some bosses are unplayable
The last month we were raiding we were never able to do SOA (last boss of Eternity Vault) because of all the bugs, gearing up was quick and easy and there were not much incentive to continue past hard mode raids.
But the main reason: DEAD SERVERS
For some reason the asshats at Bioware/EA decided it would be an awesome idea to just put up 90 fucking servers just for EU alone (10 servers would be more than enough).. So most of the servers have really really small populations. My main and my guild is stranded on “Scepter of Ragnos” where I just took this screenshot:
People are complaining like crazy in the forums and many people are not playing because their lvl 50 characters are stuck on dead servers which are no fun to play on at all (impossible to get groups together for raids/pvp/word bosses/etc..) but Bioware hasn’t done anything and were ignoring the problem for months. There are so many posts about dead servers on the forum that it’s not even funny.
Meanwhile the community itself are abandoning the low population servers and moving to one of the 4 servers that actually have people on it. Most of the people I’ve been playing with have moved to “Tomb of Freedon Nadd” where I just took this screenshot:
Scepter of Ragnos mostly have imperial players, so republic fleet there would be about 2-4 people.. So the server where my main is has 15 people on, while the server everyone has moved to has around 200 
Character Transfer
The only thing that has even a remote chance of getting me to play again is enabling character transfers. But even that has a slim chance at best, since most people I’ve been playing with is fed up with the game, and our guild which was awesome barely has any players left.
When character transfers come you probably won’t even be able to transfer your characters to highly populated servers (where you got your alts now), because players there are already complaining about queue times during peak hours. So You’d have to get lots of guildies and other people to agree to move to move all your characters from both your dead server + tomb of freedon nash to a third server.
I’ve totally lost faith in Bioware’s ability to manage this MMO after everything that’s happened, so if I had to make a guess, I would guess the player base is going to continue diminishing, until EA gets pissed about the missing $$$ and turns the game Free2Play, after that the game pretty much dies completely.. Which really is a shame cause the game itself is pretty good, and the class quests and stories are unrivaled in the MMO genre.
