Like I said OP. The reason why people don't run is because it's boring and the amount of misinformation being given by people who don't know what they are talking about.
Most people consider running 5 miles an achievement of some sort. Then you have the cross-fit guys who do shuttle sprints and that's the extent of their running.
AGAIN YOU DO NOT GET SHIN SPLINTS FROM RUNNING ON A PARTICULAR SURFACE. YOU GET SHIN SPLINTS FROM DOING TOO MUCH TOO FAST. YOU ARE MORE LIKELY TO GET SHIN SPLINTS FROM RUNNING ON AN UNEVEN SURFACE SUCH AS GRASS THAN CONCRETE. IF YOU ARE MADE OF PLAY-DOH AND CONCRETE IS TOO MUCH, JUST HIT THE TREADMILL WHERE THE SURFACE IS CONSISTENT.
Tight Achilles and calf muscles.
An inexperienced runner just beginning to run.
Running on uneven terrain.
A sudden increase in faster running (speed work).
A sudden change from soft to hard running surfaces.
Running in worn down shoes.
Excessive uphill running.
Poor running mechanics which include excessive forward lean,
excessive weight on the ball of the foot, running with toes pointed outward, landing too far back on the heels causing the foot to flap down, and over-pronation.
That's why I told you to take it slow. If you take someone who's never ran before and suddenly had them running 30-40 miles a week, that person is going to get injured and slow progress. It's no different if you took someone who's never benched before and had them attempt to lift 225LBS. INJURY. It's really that simple.