Is it really worth it to keep a vertical? I get the premise but beers can change so much over time does it mean much to compare a recent release to one released 2,3, or 4 (or more) years earlier. The 2015 may have gotten better or it might be worse. Whichever it was it might be the opposite for the 2016. Maybe you will be able to find the ‘sweet spot’ for a given beer. At the end of the day wouldn’t you be better off finding a beer that you like relatively fresh and drinking that. Am I missing something?