I dislike the zero drop rewards for events because they remove an element of fun from the game.
I always figure out ways to get 'enough' of an event resource for myself anyway. But things like this reduce the number of people who find the game fun. I believe that giving a zero drop reward for event currency is, quite frankly, stupid, in that regard. Running off customers with crappy reward systems is just bad business.
The fewer players we have, the smaller the base for supporting any number of things, from lower costs for gems to more development of features to finding a better software platform than browser flash. And these all impact me a lot more than finding a way to get 22k eggs in 20 days.