This is a bad analogy. Hens are a relatively cheap, rapidly depreciating asset that require constant maintenance and will cease to be productive in a few years. The capital cost of the hen itself is essentially negligible. Of course you don’t mind when they get cheaper.

This is completely unlike stocks, which you can hold forever at no cost, and whose output, on average, goes up over time.

If we need to make an analogy to something non-investors can relate to... well, it’s pretty tough. Which is probably why there are so many different opinions out there about how you should feel in response to various events.