The decline of empathy relative to how many people you see

You ever wonder why you don't feel the same level of emotion towards people you see in mass and people you see in smaller groups, me too. At the moment I work at a job that requires me to face up to 8000 people nearly every day during peak times when I see their faces I don't really feel anything towards them and when they have an issue i don't feel bad, weird right :/... even when they get angry or kickoffish I have no problem dispatching of them no matter how they plea their case.

Its always been a mystery to me why I've felt this way but recently when faced with a situation where a person yelled at me (a staff member) for a really bad mistake they made that couldve resulted in themselves and others getting hurt lead me to come to the conclusion that he saw himself as the only "real" person there and he was the "main character" which caused me to come the conclusion that... 

 HUMANS WEREN'T MEANT TO SEE OR MEET SO MANY PEOPLE 

I think our minds can't handle the amount of emotion required to treat everyone with true fairness or empathy/ sympathy STAY WITH ME NOW!! I think the values correlate along the same line where the amount of sympathy you feel falls as the amount of people you see rises, I also think this is a key reason why celebrities are so out of touch with reality, they just don't see their fans as "real people" with lives.

but you know this could all just be nothing id love to hear YOUR thoughts!