Jokes aside, when I was a teenager, most cars you could get as a teenager made lots of noise and didn't go particularly fast. Now, kids on their P plates can get cars that can easily exceed the speed limit and do it comfortably.
Which means that your chances of coming across a driver with few years experience driving, doing speeds they are not so good at, is much higher.
I remember getting my first decent second hand car which was a VN commodore. The thing could easily get to the speed limit and be quiet doing it.
If you don't appreciate people having lights on when driving in the country, you haven't done much country driving. Driving for 8 hours and the other cars having headlights on makes things all that much safer.
Similarly, if you are the loser waiting at a roundabout to see if the person in the new car has their tiny 'spot' indicator on, you are a more patient person than me.