Vivian's belting journey.
Laura You can always find a good reason why the emergency key was used
It seems to me if your powers of persuasion were that strong you would have gotten rid of your belt years ago. 
More seriously, what constitutes a good enough reason is obviously subjective and will be a judgment call in the moment. However, the implementation will obviously require a conversation between the wearer and the keyholder where they come to an understanding about what kind of situation the key is for and what the consequences will be if it is misused.
Got a feeling Laura would make a most excellent keyholder haha.
I would never endorse an unsafe behavior. I would presume to tell others what they should do. I only try to relate my experience and share things I have learned through years of actually wearing a belt. It is, I think, necessary, for me (and my accountability partner) to consider risks and plan to deal with them.
It could be possible for me to have an emergency key. However, if I keep it at home, then there is the risk that I need it when away from home and I would not have it. If I carry it with me, there is the risk that it becomes lost, damaged, or stolen and I would not have it. It is less risky, for us, to plan that in an emergency, I would rely on emergency services to remove the belt either on site, or at a hospital, if necessary. This also handles the situation when I may be incapacitated and not able to access an emergency or be able to tell someone how to access it. Relying on the single point of failure of an emergency key is vastly more risky that relying on the hospital and emergency services infrastructure.
I do not think what we do is the right way for anyone else. It would be wrong for me to tell other people what they should do. I can only describe what works (and has worked for a long time) for us.
Tjc Relying on the single point of failure of an emergency key is vastly more risky that relying on the hospital and emergency services infrastructure.
The presence or absence of an ermergency key has absolutely no bearing on whether or not emergency services could destructively remove the belt. If the situation is dire and they have the tools at hand, they can cut it off even if you lost the key or left it somewhere. On the other hand, if the tools are not at hand, having to wait for the tool to be brought in delays emergency response. And if the issue is one where you are conscious enough to retrieve and use the key, it means you avoid taking up limited emergency service resources.
The ability to call emergency services is of course vital for any safety strategy, but it should always be one layer of many. Like a slice of swiss cheese, every safety layer has holes, and we avoid them by stacking more layers so there are fewer places where multiple holes line up.
Tjc Relying on the single point of failure of an emergency key is vastly more risky that relying on the hospital and emergency services infrastructure
What prevents to have both (and more) in place?
Like… since I have safety belt, I can’t use airbag. This is very silly.
More experience people should advice less experienced one. This is the way things improve.
As much as you can against my approach, security is an entirely different matter, one that should always be considered.
pestulens t seems to me if your powers of persuasion were that strong you would have gotten rid of your belt years ago.
That's why my keys are in parents' safe 
pestulens More seriously, what constitutes a good enough reason is obviously subjective and will be a judgment call in the moment.
It comes from days when I often "forgot" to put on the belt
VivianChaste Got a feeling Laura would make a most excellent keyholder haha.
If I have kids, yes
Laura Chances of that seem slim if you do not get out of the belt soon. Which is of course a totally valid choice in life.
youdontknowme if you do not get out of the belt soon.
Or get married
While you have no KH you could get a kitchensafe ,making the keys inaccessible up to 10 days at a time.