Acedia is still a the actual root evil and no one (even given the "que sera" from 70Chip), is argueing for it or, IMO, exhibiting its symptoms. In leveling your various assertions of sinful behavior and/or, mental illness, you continue to assert that your emotional reaction is the only legitimate way for a human to consider and deal with the hypothetical physical destruction of humanity. However, the alternative to this ultimate sadness you seem to require is the acknowledgment that, while sad, it is beyond our control and we will not spend more than a moment thinking about it. This is
not acedia.
Someone who approached this issue with acedia would have nothimg more to say than, "ehh so what".
"Sloth (or acedia) is a kind of spiritual laziness (as opposed to mere physical fatigue or depression). It means not making it a priority to do what we should, or change what we should in ourselves. Some people might call it apathy, which means a lack of feeling."
Seven Deadly Sins - Sloth/Acedia
You, in a very patronizing and emothionally elitest fashion, confuse apathy with an introspective resolution on how to deal with the destruction of our physical being.
When I was a child, death and events out of my control scared me. They scare me still, but, as an introspective adult, I recognize them for what they are - either inevitable or events beyond my control and for which the self protective purpose of the fear instinct is inapplicable. I feel, understand, and accept the emotion, then, with thought and care, I move beyond it.
If I and others have practised this process throughout our lives and need not be struck with deep introspection each time a variation on this theme is presented, that is not laziness but a recognition of an already solved problem for which deep thought is not required. With experience, I need not conduct intrusive surgery to determine if each cut has caused internal injury.
In fact, the assertion that it is natural to feel overwhelming sadness and that those who don't are clearly apathetic
can, itself be a indication of sloth. Surrender to emotional responses is easy and requires no thought or introspection.
That is a failure to make "it a priority to do what we should" and a true spiritual laziness.
All but the truly apathic will experience emotional responses, it is how we deal with them that determines our vitality.