Maggie,
I use to ask myself those questions too...maybe if I...maybe I should have...maybe I didn't....
It's all useless, questioning what we did. It was NOTHING we ever did that led them to drugs.
We did the best we could with what knowledge we had.
Don't beat yourself up, you have no part in this. None.
You loved him, like I love my sons too.
Hugs.....