a) When I don´t get loot in my own raid, someone else in this raid will get it. No matter who get´s the item - the raid will be stronger next id. It´s ok.
b) When I don´t get loot in LFR I really don´t care if someone else gets something. It´s either wasted to a faceroller or never seen again.
But then... in the end it´s only pixels anyways. :-)