Because I dont need to sand down the area in which I am attaching the
ground.


Well true. But you didnt answer how it makes more sense to run back to the
battery. So why is it?
I find it way more difficult to run 4 gauge back to the battery rather than
scraping a little paint away and attaching it within a couple feet.
Either way, but you spend more time and money running it back to the battery
for usually zero advantage.

Les