It seems like the ethical thing to do? If there's a 1/1000 chance you save someone's life for a couple of bucks because you convinced them to use DRL one time, why not take it? Everyone's threshold is different (e.g. if you see someone about to jump off a bridge, there might be a 99% chance they die unless you talk... do you talk? This is the same but on a different scale...)
Well, I agree, very different scale and set of circumstances. BTW I'm in no way challenging the light thing at all. I happen to ride with them myself, always!