Awful name fm, but I do have to agree that I would never leave a 6 year old at home for any amount of time and certainly not with smaller children too. Anything can happen in a flash and I just couldn't take that risk. I have 3 boys aged 12, 3 and 20 months and won't even leave the very responsible 12 year old with his younger brothers. Maybe I will in a year or two, when they are asleep, but if something happened while I was out he would feel so responsible and I don't want that.
But each to their own, I am sure no-one here leaves any child unless they feel it is totally sfae to do so.