I am not sure that I even have a life but it is at least possible to exist without friends. I do have family in my life so I am not totally alone.

2010 is when I shut out everyone but family. Even before that, going back to after high school(1986) I can count on both hands, and have fingers left over, the number of people I let into my life and could be called a friend. I have zero regrets and don't feel lonely in the slightest.

The older I get the less I care about having friends.

You can pull back for a while and see how that goes. Each person reacts differently to being alone.