Could we have double bed frames for kids and teens ?

Another nice perk of using only double beds for everything past toddler, is that then you don't have to deal with monsters under the bed. Siblings can share a double bed in their room, no problem. Or share a bed with a parent, so you can have a single parent sharing a studio apartment with their child, and not need another bedroom, or even a bedroom at all, necessarily. It works. :)