Today loneliness and social insolation are very common, specially in people over the age of 75.
These people spend a lot of time without talking to a friend, neighbour or family member. They can feel insolated for many reasons, as the death of friends, bad health... These things could generate depression or other problems too.
Only in the UK there are more than 2 million people over the age of 75 who live alone.
These people should stay positive, keep in touch with family or go out with friends.
I think that we need to help these people staying with them and ,in my opinion, loneliness should never exist because it is an awful illness.