Anecdotally, my dad and I drove into the woods and cut down trees for the fireplace in my family's house. After he cut down the tree, he would cut the tree into 1 foot rounds and then split them with a maul. The cut, triangular pieces had to be loaded and stacked into the back of a pickup, and it was back breaking work.
However, every time the work was done, I remember feeling a sense of accomplishment and contemplating how it was the drudgery that ultimately created that feeling.
I think that we should not spare our children these enormously valuable learning experiences in the name of safety.