I was at the point where i wasn't playing enough to justify 5x $15 per month, so i stopped it.
Cata was interesting the few weeks i played it, but after 6 years i lost interest.

Now if it became F2P I would log in my toons still sometimes, and upgrade those i have i think.
Then again, It's been 8 months since i quit, and i received last week a 7-day free voucher. still havent used it.