I'm sure that the weather app and Merlin people have many reasons why I should turn on GPS tracking on my phone. I have two good reasons NOT to: PRIVACY and SECURITY. My wife and I are retired. She's the ONLY person who needs to know where I am 24/7, and vice versa.
I no longer use Merlin because of their ridiculous demand that I activate GPS tracking.
PS I also ceased my monthly contributions to Merlin.
attribution: Intel Free Press, CC BY-SA 2.0 <https://creativecommons.org/licenses/by-sa/2.0>, via Wikimedia Commons