Mobile App, High Accuracy Question

I have a question…
Why is is it possible to turn high accuracy on only when entering a zone but it is not possible to turn it off when leaving a zone?

I would like accurate tracking when I am not in a zone (specifically ‘home’) because I want accurate tracking but I don’t need to to waste battery when I am home because, well, I am at home so what’s the point in accurate tracking? I’m on my network. I know I am home!

And yeah I know this post won’t directly change anything but it may show me why things are the way they are so I don’t waste time hoping for/requesting a change that will never happen