Back in the 80s, they didn't have all this BS on cars. They've slowly conditioned people to think that they "need" all this extra crap on their cars. Is it useful? Perhaps. You be your own judge on that. If you want to pay for it and use it, great. I'm not all that keen with it.
I have a phone with maps on it and navigational capabilities if I need it, and also a Garmin with lifetime map updates. Sure, the Caddy and GMC has all the bells and whistles, but meh, I've got BlondeStar only on the Caddy for the wife only because I want to make sure she is safe as possible when she's out by herself. 4 vehicles with OnStar capabilities would be a friggin' expensive deal for all 4. For me, fugg it. I don't want that sh*t.
I find it unbelievable when you call them and tell them not to extend the subscription. They want to offer great deals then because they don't want you to cancel, but won't give you any deal if you bend over and just renew it. So I usually just stop them mid-sentence and tell them no, just cancel it please. And they do.
To me, that unwanted mandatory option crap is like the BS the Olds dealership tried to do to me with the black 85 442. When it was delivery time, they said that it had this undercarriage rustproofing crap. Wait, I told them not to put that on, and now you want to charge me for it? Give you two options, scrape it off, or include it with the car. They gave it to me free. Could be what they'll do for idiots buying all these newer cars. Oh, yeah, ok, we'll just include it with the car, knock the 1500 off the price and you'll pay full sticker otherwise. They'll still win.