Because the game is filled with greedy children, they want to attack but dont want to be attacked.

I only get mad because i need those coins for my group skills,lucky wheel for group summon packs and coupons,upgrade stuff,and to buy stuff in the black market.I be in debt and then people come and attack me.Im still mad from when someone teamed up with 2 other people and attacked me while i was afk...i came back to me seing i had like 13k coins left.That was back around in 3.0.