One of our high and mighty accountants had a problem with their high end tower PC one day. I checked and it would not boot because the power supply had died. Since we didn't have a spare we had to get it sent overnight from the manufacturer.
The next afternoon as I was replacing the power supply, he was berating me and our entire I.T. support group because we did not keep said power supply as a spare sitting on the shelf. Once he finished his tirade over that issue he began complaining about the expense of ordering the replacement and having it sent overnight to reduce HIS downtime.
This was aggravating me to the extreme because:
1. He had recently completed a large project to reduce supplies and other consumables company wide to reduce operating costs.
2. Due to #1, our spare parts inventory had been cut almost 75%.
3. Before #1 we kept several of those power supplies on hand because all the upper level management people had the same make/model PC.
When relating this story to my boss, I reminded her how difficult it was NOT to explain to the accountant exactly why we didn't have the part handy and why it required expensive shipping to get it into my hands to keep his downtime to a minimum.