My parents the drug addicts - from Iain

I've read many stories on children being affected by a parent on drugs. It affected me and I was raised by my grandparents. They got little help and basically I grew up thinking that my parents didn't want me. In so many words they didn't because they chose Heroin over me.
Both my parents are now dead through illnesses related to substance misuse. My grandparents are also in heaven due to old age and natural causes.
I never got answers and the only thing that helps me to try to understand is reading as much as I can about drugs and how it affects all of us, not just the drug addicts. From Iain.