Out of curiosity, what do you use it for? I turned mine off after learning about how Google gives the info to police, and the only thing I miss is being able to set my home location in Google Maps.
It also gives you data you can look at when analysing your life - e.g. how often I go to a friends, how long I spend walking in a week, how fast particular routes are to work, etc. When I used to fill in timesheets it was an easy record of what time I got to work each day. There's a fairly basic nerdy pleasure from having these facts available. Yes, I could collect this information manually and keep these records myself but that is quite a lot of work which I'd prefer spend doing other things.
I've also used it to piece together the previous night after getting blackout drunk in a foreign city.