Yea but... seeing someone else drive is not at all the same as doing it yourself. You've forgotten what it was like to learn how to drive a bit. I remember the first time I took a car on a public road wondering how the hell people were brave enough to do the speed limit. 55 mph!!! I already felt out of control and like a speed demon and the needle was barely hitting 45 mph. Cars were passing me like crazy.

I wondered how anyone could even begin to contemplate speeding.
I think on my second day of driving on public roads I blew right through a stop sign.... didn't even see it. My driving instructor made a police siren noise when I did it, but he let me plow right through the intersection (I guess he checked it out as I was coming up to it).
Another mistake I made early on was to follow a truck through a stop light, it turned red while the truck was entering the intersection, but I couldn't see the light because of the size of the truck. I followed the truck and ran the red.
Merging with traffic is another headache, especially on some of the notoriously short on-ramps that we had where I was learning how to drive. On-ramps with no shoulder.
It's a hair raising experience. The world seems to move a million miles per hour compared to what you're used to, and everything is overwhelming. These days, of course, the task is to stay alert. It's easy to get "bored" (as one GTP member put it) while driving, and that's when you'll find yourself in an accident. I will say that when I moved to Los Angeles I experienced just a little bit of that "the world is moving a million miles per hour" sensation again as I white knuckled onto 6 lane freeways moving at 80+ mph with drivers leaving no room, and with no manners. I got used to that too after a while.
Anyway the point is there is a lot to take in the first time you hit public roads. It's better to do it in an auto. My first car was a manual, but all of the driving practice and driver's ed that I did was in an automatic, and I'm glad of that.