Has anyone eventually identified their Idiopathic Ventricular Fibrillation

I suffered a SCA a while back during some sprints on my bike trainer and by the time the paramedics got to me I was in VF.

I've done a ton of testing but everything shows up pretty much unremarkable.

The findings found my initial potassium was slightly low (at like 2.8) but seems to be able to maintain itself, and there was some mild-to-moderate fibrosis in the heart. Otherwise heart looks "good" according to the doctors. No one has told me but I assume it applies regardless that I have bradycardia going into the 40s at while sleeping, and I have rare PVCs.

The response was to put in an ICD and set me on my way. No meds, and continue my regular life.

It's frustrating that there seems to be this likelihood of recurrent future events but they have no idea what caused it. And we're putting in this shock box to "save". After getting two inappropriate shocks I want this thing out of me. If this was some freak accident, is this really a better option causing trauma, PTSD, and depression if it never ends up saving my life.

Unfortunately I guess the reason I have it, is there is conviction that it probably will save my life? I just wish we could find some reason. Putting this crazy box in me doesn't feel proactive enough. - this feels like it should be a temporary fix. Shouldn't there be some explanation or fix. Ugh. If there's some concern, shouldn't I be on meds?

Thanks for letting me vent. I've been talking to so many people on here and I don't know what my headspace I would be without this subreddit. I also apologize a lot of what I said isnt helpful/kind for other people here. I just need to let some frustration out. In the process of looking for a therapist/psychiatrist because apparently I need that now too. Ugh