It is NOT like breaking up with someone. if you get that emotionally attached to a game there is something seriously wrong with your thinking.
they are not announcing their displeasure, they are trying to worry/scare bungie so bungie will change and cater the game to directly how they want which is not ever going to happen.
people can post constructive feedback without it being whinny and entitlement minded sounding as most of these I quit posts are.