This is a subject that is very important to me... I'm single, and I don't have close relatives besides my mom and my brother. Since I don't believe that my retirement plan would be in a enough volume that could provide all my basic needs, I'm trying to settle some basic income sources till I get 60. That is a concern that is very present in my thoughts...
If we are isolated from close relatives, and we live in country side, or even in a big city, were neighbors aren't so attentive on what is happening around them, the social isolation, and loneliness is something real and palpable.