I have no problem with kids riding scooters provided they are supervised, especially kids of say 3, 4, 5 years of age. I've often seen kids of that age on scooters yards from their parents, who are too busy to notice because thay are busily arranging some ground breaking deal on the mobile phone. To say that this is a recipe for disaster and an accident waiting to happen is putting it mildly. And if, god forbid, a child was injured as a result of such negligence, no doubt the negligent parent/carer would blame the other party or driver if the child ended up under the wheels of a vehicle. Always someone elses fault.