I thought so too, but I listened to call-in radio show in Romania recently about tracking kids, and pretty much all the parents said they track their kids and those who don't are irresponsible parents.
I'm 35 and I don't recognize this world anymore. We played outside in mud when I was a kid.
My family can find my own location on their phones at any given time. I don't feel like I've lost privacy because of that.
Then again, Google has 24/7 access to my exact location if they want it, so maybe my priorities are a little messed up.
Can totally see how that doesn’t work very well in the US.
But these are personal preferences, I’m not imposing this on anybody.
As a parent you can still make the decision to not pick your child up if they are tired and want to be picked up.
Predators don't just snatch you up like in some movie, they watch their targets first, or lure them away.
People/children have a gut feeling when something is not right and can call for help.
Will it be 100% effective, no, but it will drastically improve response times just by knowing the exact/last location.