Honestly I think I know what a recovering crack addict feels like.
I'm getting more sleep because I'm not spending time on it before going to bed/waking up, I'm not using bandwith for the game to load/update. Not wasting literally hours clearing up my inventory, using event items before they expire, selling gill snappers while getting pissed I'm at the gill cap, fusing cactaurs and junk unit/tmrs etc...
And that's not even mentioning actually playing the game and grinding!!
Like you though I won't delete it. It's on my computer, so I can spare the 1GB it takes on NOX. I'll check in every now & then to see what events they have, but as I can't play them it's not like I can take up the habit again. I am disappointed I won't see the FFVI or Seiken 3 event though.