If you even fear that you may care too much about people, just take a month or two and go work in some sort of food service.  Instantaneous cure you might find.  I can understand how there are a lot of people in food service who would show up in the left tail of a normal IQ distribution curve, but there are just as many people who are trying to make it through college and move on to a career.  Working in fast food does not automatically mean that you have the IQ of a walnut.  I worked at a sandwich shop in a mall food court for almost two years (that right there is a double whammy - like being diagnosed with erectile dysfunction and hyper-sexuality at the same time) and I am still recovering from the damage it has done to me.  For a while there I had become so misanthropic that I tried to pass legislation on abortions which would extend their availability into the 400th trimester (after a child turned 40, they could no longer be aborted).

Some of the instances I've had to deal with boggle even the most understanding of minds.  I've had more than one person ask what kind of meat the chicken sandwich had on it!  I thought they were joking.  So often times I would just stare at them and said "pastrami" and they go "oh...nevermind".

But people take their food way too seriously.  I can understand if you are paying $25 an entree, but if you're paying $6.10 for a combo meal?  C'mon, that's just being petty.  I'd be standing at the register and they'd walk over to the salad display (which is nowhere near the register) and start trying to order.  Finally I'd coax them over to the appropriate ordering position where they would stand frozen as if God himself was making them choose between letting only their Father or their Mother live.  They'd be frozen - dumbfounded and in a state of fight-or-flight out of fear of making the wrong decision.  "Do I want turkey... or do I want turkey and bacon?!"  Tears would be welling up in their eyes.  The small panic clouding their mind..."turkey... or turkey with bacon." 

What was just as annoying was when customers did not understand what that huge slab of countertop between me and them meant.  There are apparently some sort of cultural norms that break down in the presence of countertops.  To me it meant "This is a comfortable distance to maintain while ordering" but to them it obviously meant "Lean over as far as you can until you are practically punching in your order for me." Like they wanted to whisper their order in my ear, "Come here!  I've got a seeeeecret!" practically stroking my hair back and gazing into my eyes as if to say "You're the only one who understands me."

It was either that or they'd attempt to order from a mile away.  I'd be pulling out flares trying to bring them in.  They'd be whispering "Can I get a large Coke?" from half the food court out and I would form a mini satellite dish around my ears with my hands and give them the 'I can't hear you' shrug and head shake.  In reality I actually could understand them, I just felt like letting them know that it was ok to cross the street and actually come in to the food court.  The bottom line is if you question evolution, work in the food industry and you will start to see why Darwin suggested we evolved from apes.