The boss asks for your opinion. “I need a recommendation for a new computer.”
You ask a few questions. Price range? Purpose? Anything special it needs to do?
You take the task seriously. You conduct research. You think outside of the box. You are creative and expend energy. You want to do a good job.
This isn’t your specialty but you try your best. After finding what you think is a pretty good answer, you pass it on.
The next day that boss says, “My spouse told me to buy something else. Something totally different than what you recommended. I’m going with that.”
In a few days the computer shows up. It’s neither. It turns out the boss went for a third option. The very thing you cautioned against way back at the beginning.
The boss now has a stupid piece of shit but it was worth it to put you in your place and make you spin your wheels. It sure can be funny how things work out.