Because I, along with others, feel it's a half arsed game when PVP and Ilum are virtually unplayable - despite having PCs that should play it easily.
My sub runs out tonight or tomorrow, and am going to give a few months or so to see what patches they release that fix the performance issues that people are getting, and if they do that, then I might come back.
I hope they do too. I don't want it to fail, though I've a feeling it will