Best use for location sharing I can think of is traveling in a convoy of more than one vehicle, when you plan to meet up for lunch somewhere along the way. At least one person in each car shares their location with each other during the trip, so you can tell that car B is 20 minutes away from the restaurant while car A is 30 minutes away, so car B can afford to stop for a bathroom break.
Then you turn off location sharing after the trip, because you don't actually want to share your location with casual acquaintances all the time. At least, I certainly don't.
It’s actually a good use case. However what we usually do is decide where to meet/stop and we wait for others to reach and until everyone arrives we relax, joke around, munch on something or so. If someone is getting too late then we call and check and if they’re fine and are just getting late then we weigh on making fun of them and pulling their legs and sometimes actually do that. Stuff like that.
Then you turn off location sharing after the trip, because you don't actually want to share your location with casual acquaintances all the time. At least, I certainly don't.