For the reason that beer could be like wine. If you don't like wine, I imagine beer could be a decent option to have a neat collection of
The exeception to this rule is that beers with added acidity, like a lambic or a Berliner weisse, will age well despite being lighter and lower alcohol content.
I have a few like this sitting in the basement. At least one of them has a label recommending at least one year and up to 20 years of storage. It will be fun to see how it tastes at some point.