A good friend of mine has a motto set in stone that he will never steal something that has a price attached to it. An example: He won't steal a salt shaker in a store. He will steal a salt shaker in a restaurant. He justifies that if it doesn't have a price, it will not rob the company of earning or push their earnings back.
Your friend is very wrong. Whenever ANYTHING is taken from a store, it requires the store to purchase the item again. I'm not sure if you've ever taken any courses in business, but it should be pretty obvious how to determine the profit for a basic sales system: Profit = Revenue - Costs (Pay checks, inventory, electric bills, and so on). Unfortunately, the store must replace the stolen item. This makes costs for the store go up, which means if revenue doesn't go up, the store loses profit. The easiest way to increase revenue is to increase prices.
I justified my action that this is a huge retailer, loses hundreds of dollars every day, and they won't even miss what I took.
Sure, the retailer itself won't really miss your stolen item. They'll just have to jack up the prices FOR EVERYONE ELSE in order to cover your own stupid idea. However, you fail to realize that stealing from a store location affects the job status of the employees who work there. If enough items are stolen, job cuts are made at the store level. This is a terrible thing, since retail store employees probably make less money than you do, and they are the one forced to lose their jobs over this action on your part.
To put it bluntly, you're so naive in your own little understanding of how it works that you never actually considered the large-scale repercussions of your actions.