I'm in my early 20s and living with family.
I never leave the house alone, aside from driving to meet up with people/friends. I never just pop out alone to run errands. I don't know why, I just avoid doing it so much that it feels like it's not really an option. I have my own car and can drive, yet I barely even drive alone.
If I need to go shopping I'll go when someone else needs to go.
Today I had the day off of work and everyone else I know was working and I needed to go shopping, so I did. I got in my car and drove to the shops alone. I felt really anxious and unsettled wandering around my busy town centre alone.
I never really realised; it's quite abnormal for a healthy able-bodied 20-something year old to feel anxious going out alone isn't it?