Faith,
Just from my own experience...(my husband on crack) they are really emotionless to everything else expect the HIGH. He would jump around like a jelly bean when he had a fix on the way, but any emotion or care towards me was like a brick wall. A $20.00 bill got more affection than me, but he could show affection towards me for a brief moment if I had the $20.00 bill.
I only know to well the loneliness and yearning for them, but if you really sit and think about it the loneliness out weighs the chaos of addiction.
This crack is nasty stuff!
Rose