My friend that taught me how to brew drinks any kind of beer from pilsners to stouts, fresh or stale.
He will deliberately keep a bottle or two of each batch of home brew that that either he or I have made in his refrigerator for years and occasionally pull one out for us to split. And all these are beers with ABVs of 4% to 6% that you would not expect to be aged for a long time.
Two weeks ago, he pulled out a brown ale I brewed two years ago. Yes, it was stale but not horrible. But he did share one with me once that was 10 years old. ABSOLUTELY AWFUL.
Comments please and thanks.