Honestly, we don't think best before dates help beer drinkers! Beer isn't fine one day then bad the next!
Many beers continue to develop in the bottle and can be cellared in exactly the same way as wine (which bizarrely isn't required to have best before dates).
Some beers also display a bottled on date as well as or instead of a best before date, so double check that too.
In short, drinking beer that is past it's best before date won't do you any harm and can be a perfectly enjoyable experience!