I went with my dad from the age of 6 and started helping unload the truck as soon as I was strong enough to carry whatever he was delivering.
Imagine that now. A primary school child unloading a wagon with no PPE on 
It’s bad enough a grown adult walks across a yard in daylight without a hi viz on.
This was many of our routes into the industry and has no doubt lead to a lack of interest in becoming a driver.