I heard an old kook suggest it was "designed" to kill off those that are a drain on society -- the old, infirm, and sick.
Those will serious illnesses that are expensive to treat (many of them indefinitely needing expensive meds).
Those elderly who would have passed at 70 years of age in the past (as Soc Sec was designed) who are now draining the SS system by living into their 80's and 90's.
These people are "not productive" in society but rather cost society a lot financially in healthcare and entitlements.
Or is it that "kooky"?