I like GW2 due to the selection they made being close(r) to the selection I would make. Sure there are things I would(n't) have picked from other games but this is the closest fit.
This is also what it comes down to for everyone trying to decide whether or not a(ny) game is "worth it". Do your research,make a +/- list for the game you're quitting/no longer interested in and do the same for the game you're interested in playing.
Now add values to each point. EG: "I like the friends I have in game X", that to me is 3/10, "tier gears" that's 0/10, "Raids" 7/10,... and so on naturally the game you're wanting to quit/quit should be below 5/10. If the other game isn't 5/10 don't bother.
(it's better to look at mechanics than friends etc but I had to give examples )