So very sorry to hear this, I wish you and your family the very best, and hope you get the absolute most out of the time you have left.
As many have said, lots of us are complacent, including myself at times, and your shared thoughts are very sobering. I for one will be purchasing a much more professional mask for my next explore.
As I say, best wishes to you, thank you for sharing, and good luck with the legal process
-RR