Pubs are definitely a valuable community resource. Not only for the many older people, who would otherwise have very little social contact, but they are very often vital in supporting the local community. Many pubs have teams (dominoes, darts, pool, football etc.) which help cement community spirit. They also hold raffles, quizzes etc. to raise funds for local charities.
The other major way that pubs are vital is that they are supplied by the local businesses. Many pubs use local independent suppliers, such as breweries, butchers, greengrocers, bakers etc. etc. They will also employ the services of cleaners, gardeners, pest control, window cleaners etc.
Hundreds of pubs have already closed and many, many more will over the coming winter. Winter is traditionally the worst time for pubs an it is only the boost of the few very busy weeks at Christmas that keeps pubs going until the following spring. Without the vital Christmas trading this year, it will be impossible for many pubs to survive.
So while many people don't use their pubs & won't miss them, you may well miss your local butcher & baker when they struggle to survive too.