Brings back memories, but granted it wasn't a gas stove. My mom still tells the story of my going over to a friends house for a sleepover - age 4 - and making myself and her eggs in the morning on the stove (back in the mid-70's) before her mom got up. Always did it at home, but the mother freaked out a bit. Totally get it now, but it was normal in our house so I didn't think anything of it!

I'm not sure I would be OK with a 7 year old cooking with a gas stove by themselves though. If I were around the house near by and I've taught them well, then probably OK.