Can't remember if I rode on the 3rd or not. Wait, of course I did, but it was probably groceries or something like that. dur. Or chasing my 13YO around the yard on his XR100. Yup, I bought my younger son a dirt bike! Woohooooo!!!!!
My comment on starting small: It depends on the rider. I started mid-size, and still am riding the stupid thing because it's perfect. I had a little 250 for a while, and I don't think I would have appreciated it as much as I did if it was my first bike.
Going to look at a Sherpa this coming week, hopefully bringing it home. I want to get some dirt skills using the lighter bike with more ground clearance. Actually, if it's as much fun as the little CBR was.... it could see even more duty.