I never really liked the taste of beer all that much, but it's what everyone else drank, so it's what I drank. I think that, over time, "people who don't like

I never really liked the taste of beer all that much, but it's what everyone else drank, so it's what I drank. I think that, over time, "people who don't like the taste of beer" are finding they are a silent majority. As more alcohol-but-not-beer options come to market, they keep buying those. I like Kombucha more than beer, now add slightly more alcohol and you have a suitable replacement. Now imagine this process repeated across every imaginable beverage category that can be sold in stores, and the beer decline is easily explained.