The main argument, to me, for command-line arguments is that they're not automatically inherited by child processes like environment variables are, so you don't

The main argument, to me, for command-line arguments is that they're not automatically inherited by child processes like environment variables are, so you don't have to rely on every process tidying up its environment before executing anything else. To me, that just seems like a recipe for heisenbugs and spooky-action-at-a-distance.