Why has Insomia have to be a nightmare ??

Sleep Deprivation?

If it didn't cause things like hallucinations, psychosis,
memory and cognitive function impairment, depression, type 2 diabetes,
high blood pressure and have a profoundly damaging effect on the immune
system it'd be hopeless as a form of torture!

Basically WD1, you is screwed!... Hope this helps

 

A very good example of a paradox.
Such is life.