I take the complete opposite. I do those activities because they are fun and the rewards are in line with what I value. Instead of running TK or Sunwell, or Black Temple, I can just choose to do nothing and unsubscribe. I don't understand their cost/benefit ratio at all.
- - - Updated - - -
What if you did pet battles in old zones, but they only rewarded 1/5 of the experience as ones in WoD zones? Would you still do them?