I think it depends on the child, but I do think anything from 11 upwards is fine to leave for a few hours at a time. They have to learn independence at some point and I think if you don’t let them gain that by a certain age, they might end up a little dependent and a little naive maybe because they’ve been mollycoddled.My oldest is 15 and I’ve just this week left her for the evening to babysit my youngest. She stays home for a few hours if I have to work and she’s ill but no longer than 2/3 hours at a time. Not to be a pearl clutcher but there’s no way I would be leaving anyone under maybe 12/13 alone unless it was like a 5 minute walk to the car and back?? Maybe I’m just too much of a worrier.
I started being left alone for hours at a time when I was 11 when I started high school (2007). My mum would be out at half 7 for work and she wouldn’t be back until around 7pm, sometimes later. I got myself up, got my lunch etc and cooked my own tea after school, plus I did some jobs like washing etc.
I was also hanging around with my mates from being around 11. I would go out for a few hours at a time in the evening with my mates (obviously without adult supervision).
I think it taught me some valuable life lessons and I’ve always been able to look after myself.