Originally Posted by upgrader
While I can certainly understand the concern, there are just too many other more important things in life to me than spending time worrying if we will lose any/all of our miles.
While I agree with the spirit of your message, we all know why we want and receive miles - customer loyalty - and awards

.
If any airline (or its successor) suddenly and massively devalues an award that I have "worked for" by showing them loyalty then I am MUCH less inclined to continue to provided them with any of my business. That is largely why miles programs don't "go away" (ie UA, US, etc.) when an airline files Ch. 11 and why other airlines are often willing to pick them up if Ch. 7.
And although worry might be a bit strong, I could see where some people could be concerned for their significant accumulation of miles that they've built up over a long period of time. Remember, they do have value for award travel, charity, etc.
Just my $0.02