I really want to be acrimonious about this. But simply cannot work up any head of steam.
In the past two months I booked BE trips to SYD, BKK and SCL (this for two of us) and ran the account down to about 3K miles. And with MM there's no pressure any more to at least get the better seat selection and bags for those times I should select DL in the future.
So even before this announcement I declared myself free as an eagle to chase only the best fare/schedule flight regardless of airline. Freedom feels great!
But I'll miss the old gal, especially the in flight crews. They are the best in the business.