Ok, don't flame me, since everyone is saying "IMHO"......this is mine. Sorry if it's a little long....
I think each family is unique and different, including children. I think how we raise our children and the decisions we make regarding them have a lot to do with how us parents were raised as children. For example, when I was 10 years old, I was walking home from school a few blocks away by myself, to an empty home, and I did my chores, homework and hung out with my two younger siblings until about 6 pm when my parents came home. Latchkey kids, if you will. I remember being left alone on many occasions when I was even younger. At that age I also knew how to cook simple meals, use a public bus if I had to, use a phone, and other things that in today's world many kids don't have a clue about. My parents both had to work to put a roof over our heads, and they did their best. I would never call them bad parents, they loved us, were wonderful parents and we all turned out just fine. It was a situation that we made the best of and it worked for our family. Someone mentioned in an earlier post that "today's world" is really not much different than it was back then, and it really is true. I think - and again this is only MY personal opinion - that these days our children are so sheltered and coddled by overly paranoid parents that it's any wonder they even know how to wipe their own butts. Now I'm only being sarcastic, but I sort of look at life this way. I'm raising little adults. I want my children to have some street smarts. I want them to be aware of their surroundings and know what to do in situations where I might not be there to handle it or protect them. I want them to be able to learn to protect themselves in case I'm not there to do it. This doesn't mean that I think it's okay to let 5 year old children alone in a room by themselves. But I do want to raise my children to be able to hold their own in the event that I cannot be there. I have 4 children: 9 y/o dd, and three sons, 4 months, 2, and 3. My daughter is a very mature minded child. She helps me at home with her siblings, including her special needs brother. She knows how to change diapers, make bottles, and even change a feeding tube. She knows how to use the phone, and respects all the rules regarding strangers. On our second cruise, she was 7. We gave her a two-way radio, and with detailed instructions - don't open the door for anyone, if she needed anything or felt scared to call us asap, don't leave the room, ect... - we left her in the room for an hour while we saw a show. She watched movies and did homework, and we kept in touch every 15 minutes to make sure she was ok. She did great, and everything was fine. Now I wouldn't leave her at home alone, but mind you, we are on a cruise ship, we were just a couple of minutes away, if the ship was "going down" we could have gotten to our room in plenty of time. She was safe, and fine. The likelyhood of someone getting into our room was next to nil - half the time our own stateroom keys didn't work, and it's not like anyone can barge their way through. We weren't worried at all. My husband is a firefighter/paramedic and he isn't worried about our kids choking in their sleep or on their food when we aren't looking. Maybe our 2 year old, but not the older ones. We are good parents, and our children are our world. Our daughter is 9 now, and we just got back from our third cruise. She was able to check herself in and out of the club, and she and her two same aged friends wandered all over the ship by themselves. They never got into trouble, and most of the time you could find them in the club or the arcade. Late at night, on two occasions, I left her in the room to do her homework and watch over her two sleeping brothers until we returned an hour later. Their grandparents were in the adjoining room, so they did fine. I guess what I'm trying to say is that it is a personal decision and what might work for one family may not work for another. That's ok. But it irritates me to see people posting on this topic basically assuming that one would be a bad parent for leaving their child alone. Being left alone in a room on the ship and being left alone at home are two different things and should be viewed as such. And for those dragging legalities and such into it, I think that's going way beyond what the original poster intended. I think some people are being too judgmental and getting a little too hyped up over this. Yes, we all know or know someone who.....you name the scenario here. Bottom line - do what you are comfortable doing. Anyhow, that's just my two cents, and as everyone else has said, IMHO.