Reason #1:

Inspired by this Los Angeles Times news story
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Reason #2:

Inspired by Customers Should Watch Their Language, Part 2
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Reason #3:

Inspired by Has A Problem Espresso-ing Themself, Part 2
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Reason #4:

Inspired by this Slashfood article
[Link to the image above]

Reason #5:

Inspired by Don’t Mess With Mum
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Reason #6:

Inspired by Not Always Right stories where customers attack with:
teeth, arms, shopping carts, animals, lightsabers, liver, coins, oranges, ice cream, chairs, nakedness, phones, sandwiches, shoe boxes, guitars
[Link to the image above]

Reason #7:

Inspired by I Don’t Work Here, Does Not Work Here, Part 4
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And the final reason why dealing with customers is worse than a zombie apocalypse:

Inspired by the suffering (and submissions) of workers everywhere.
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