Having no friends, no family or no social life significantly increases your risk of dying. People with strong social connections and relationships had a 50% greater survival rate irrespective of age, sex or health status.
Being antisocial is as bad for you as smoking and alcohol consumption and is actually worse for you than obesity and physical inactivity.
Being social isn’t always easy, especially for older people, but if it’s a risk factor that you can modify, it’s probably worth it. Your social life doesn’t only affect your quality of life, but also your survival.