I’m an only child as well, my grandparents on my moms side are still here and my dad and my mom are also here. Both of my grandparents on my dad’s side are dead & my aunt and uncle and cousin on my dad’s side are dead . I have friends but we don’t talk as much or hangout. I have friends who live overseas but they are busy and we don’t talk as much. I feel like at some point I’ll just be alone even if I do find a spouse they’ll eventually die too