Disable "pin required for additional security"

First off, I get this annoyingly too often, even when I'm mostly at home.  

Second, I think it's the complete opposite of "secure", as people or cameras can easily see you putting in your pin and use it to unlock your phone.  As for biometrics (fingerprint), it's a lot more secure as everyone's fingerprints are unique and very very hard to replicate especially to use just to unlock a phone, because, you know, it's physically part of your finger.  

Seeing as how a pin is not "additional security" in this context, and it's annoyingly random, I'd consider this as a bug and not a feature, and would like an option to disable this, or for this to be fixed so I can use my phone in a much safer and less annoying way.