Amusingly, I've shared my location permanently with a couple close friends on Google Maps, and Google will not shut up about it, reminding me every month about it.
I get aggressive monthly warnings "Are you SURE you want to share your location with XX,YY,ZZ?". I wish there was a toggle where I could say "yes, I absolutely positively am OK with the privacy implications here, because I don't care very much; please forever stop bothering me."