Let me tell you, they do. These days, you see three year olds riding bikes, and two year olds ride balance bikes. My boys not being as quick with their feet as with their little mouths, they weren't quite as fast. But big brother rode his balance bike at age 3, and a regular bike at age 4. We never even got training wheels.
I was sure little brother would learn that even sooner, but while he can be extremely determined, in this case he apparently decided that there was no need to learn to ride something when he could comfortably ride (or better yet, being pushed on) his tricycle. But since he turned three in March and the weather has been gorgeous until about last Thursday, we pulled out the balance bike, adjusted the saddle to the lowest position and started practicing every day.
I actually took the picture above with my phone the week before last. He's doing great by himself, but not so great that I'd like to have a DSLR dangling around my neck when we go practicing. But I figured this moment needs capturing, and that's why phones these days have cameras for, right?
Jut thinking about what phones looked like when I was three. Oh don't even get me started. Anyhow, it also came in handy as we got some ice cream as reward.
Go check out all the other simple things, too.