if you wanted an id chip you could have had one a decade ago
if you want one now they'll store your entire medical history and an e-signature waiver on it so that when you get brought into the ER from a car wreck and you're unconscious they don't have to call anyone (you have no friends) you get priority care right away
until its involuntary, nobody gives a shit about SPOOKY SCARY BIOCHIPS
Actually I expected you to have a problem with them, it's usually the gold hoarding Christian conspiracy theorists who oppose that sort of thing