According to your thought process, there is no need for musicians, artists, or anything similar, because a computer can do that anyway
Agreed. Possibly CNC and robotics could approximate a lot of things, but it takes a human touch and human devotion to quality to give a gun like that a soul.
I've never been able to afford a top-flight double gun, or any other very expensive weapon. Never will unless I hit the lottery or publish my best-seller. But I can handle one of the gems and feel what went into making it a work of art.
We have a very fine historical arms museum in my city. I can get lost looking at the wonderfully crafted antique weapons, or the lesser ones redolent of history, and get a feeling I can't get from a Glock or SIG or Ruger. It's the echo of human hands on steel.