Sunk cost fallacy and not wanting elderly relatives to understand they have wasted their lives believing something that was lies. . . . . siblings can now openly talk about how they were mislead into making decisions decades ago based on the lie that the end would come soon. . . . now they are elderly themselves
The phrase I highlighted is the sad part. If you wait and wait so as to not offend others (ie, parents) you find out that now you are too old to start over too and you have been robbed of more years of your own life.