That would mean we would essentially track people. Of course on volounteer basis but still, I personally find it too little of an argument. I mean why would you want to be tracked in the first place. If in case phone is stolen or missing it means you need to have it on at all times, which means that data is stored on our servers.
I have not checked what are the data retention options, but from perspective of a user I find it a bit too much of data to give to others hands (no matter if I trust them or not).