S.B.
I'm a single mom and there were many times I let my son stay home by himself. Granted, the neighbors across the street and around the corner were right there if he needed anything. He knew never to answer the door or the phone (unless he could see it was me or a couple of designated people on caller I.D.)
There were times I had to work a little late or pick up paperwork from a client on my way home.
My son was very responsible and followed my rules and instructions to the letter. He did fine.
I think it depends on the child and whether or not they can handle being home responsibly. It also helped knowing I had people close by that my son could call or go to if he needed anything.
I was at work one day and my boss stopped by my house, but my son wouldn't answer the door for him. Even though my son knew him very well, I had said, "Don't answer the door unless it's_______".
He followed the rule. I knew after that I could really trust him.
He did fine at home by himself.
I don't want to make it sound like he was here alone all the time, but when school had short days or my friend who watched him was taking her kid somewhere and my son didn't want to go, he did just fine.
My parents left my little sister and I home if they had an appointment for something and we had rules and followed them.
My 10 year old was great about being home by himself. He never gave me any reason not to trust him and no one ever bothered him. House locked, don't answer the door or phone....here are the emergency numbers....
It was fine.