It's convenient for me since they know how far I am when I'm heading over. They can tell if I'm in town if they want to go out. Honestly, never felt uncomfortable.
We’re talking about someone setting up geofencing on their partner so they get notifications when they leave/arrive specific areas. That’s obsessive controlling behavior completely independent of you just making your location available for people to see.
But if they used the fence around their own home to be like "Hey, when's he near my place so I can see if he wants to come hang" I think I'd like that.
So perhaps, to me, the thing that makes me happy is intent. I bucket these people into high-trust so I expect them to not do the weird one (and they won't even do the latter).