Mourning is fine if it is temporary, however no man should dread their own future if they still have control of their life. This is the idea of unalienable rights and was enshrined hundreds of years ago. It seems to me that anyone dreading the future of their field failed to take a page out of their retirement strategy and diversify their own interests, i.e. https://en.wikipedia.org/wiki/Polymath

https://en.wikipedia.org/wiki/Life,_Liberty_and_the_pursuit_...