Holding at the end of the hammer is good for knocking nails in fast, but there are many other uses for a hammer. If you watch some of Ken Hawley's films of Sheffield craftsmen forging tools all day long you'll often see a very controlled grip up near the head of a heavy hammer.
For example, in this film of John Ridge making gimlets:
As Ken says in the commentary, every hammer blow counts and every gimlet gets the minimum number of blows. Nevertheless, the hammer handle would soon develop a distinctive wear pattern and get very slender where the owner's hand gripped it.
For example, in this film of John Ridge making gimlets:
As Ken says in the commentary, every hammer blow counts and every gimlet gets the minimum number of blows. Nevertheless, the hammer handle would soon develop a distinctive wear pattern and get very slender where the owner's hand gripped it.