No one's telling you to do anything of the sort. You asked which exhaust we liked, and a couple of people mentioned OEM, and gave their reasons why.
Wanting an aftermarket pipe does not mean they can't ride... Wanting an aftermarket pipe because they believe "loud pipes save live" means they don't have the skill/training/confidence to operate a motorcycle safely on public roads.
See my previous comment.
If only everybody had this mentality, then maybe we (as motorcyclists) wouldn't be facing the legislative issues that we are. You sound like you have reasonable wants and expectations, but the next guy wants it a bit louder, and before you know it, you end up with the assclown that's running his R6 with no muffler at all, going down Wadsworth with the flow of morning traffic, making so much noise that it was uncomfortable for me to drive my car near him with the windows down.
You: Shoulder check.
Biker (ALL Bikers): Don't ride in a car's blind spot!!!