I would have to agree with you Chuck, your thought process seems spot on. Besides the big 3 all decided that too over 60 years ago. Unless you are a purist and want it correct. I just did a body off and retained the 6 volt, used all the correct large battery and ground wires, the headlights are grounded well but still today's 12v lighting technology is indeed much better, no arguments for sure. In hind sight if you plan on driving a lot in the night, 12 volt switch is the only way to fly. Plus we haven't even talked about high power stereos and power windows/door locks and the alike that people put in.
Steve
1953 Chevrolet 3100261 cu inch, sm420, 3.55 rear, torque tube still,omaha orange, still 6 volt, RPO green glass, side carrier spare, all done
In the DITY GalleryVideo of the 261 running1964 GMC 1000305 Big Block V6, sm420, the next cab off restoration