I think you do have to start them on the road to independence.
Trouble is when they are faced with something that involves skills they haven't learned they can't cope.
My DS is 10 and in 1.5 years he will be traveling to secondary school by bus and I want him to be able to take this in his stride and be able to cope with situations like missing the bus etc.
I am not keen on hil playing out as we live on a busy road and although we are next to a park it quickly fills up with older children who I don't want him mixing with. If I lived in a culdesac or quieter road he would be out playing all the time.
He goes to scouts and has been away to camp and has loads more, he has to look after his personal care and dress appropriatly for activities and bring all his kit home. I think this is excellent experience for him.
He can make me a cup of tea and his proudest achievment is using his Grandads coffee machine to make his GD a fancy coffee. He loves noodles so I have been showing how to make them himself. Skills like cooking are essential and a good way to learn about measuring and learn other maths and science knowledge.
I expect both kids (DDis 7) to help set the table and clear up dinner, they have to scrape plates and put them in the dishwasher, bring down clothes for washing and shower ont their own, tidy their rooms and DS has his fish to look after too. They walk the 5 mins to school together without me. I have just started sending DS to the library himself just accross the road and he goes to the shop for milk and stuff, again right accross the road.
I have a year to get him geared up to using buses himself and learning to deal with money better.