There's two (or more) issues here:
The bin dipping, not something I'd do unless desparate but I have a few eco friends who've done this at one time or other, mostly they were NOT addicts, but disgusted with the amount of waste generated by supermarkets... there's was a fair point, but I was never going to join them.
Addiction causes everyone pain and YANBU to feel angry at your brother. My own brother's behaviour used to make me rage, because I knew it was due to his various addictions and NOT HIM, and I found it hard to listen to his shit when he tried to explain why he did it, always skirting around the truth that actually, the way he behaved was because he'd never afford to actually live normally AND feed his addiction.
I raged.
It also broke my heart.
It's a horrible situation to be in and there is nothing you can do but wait on the side lines until your brothe is ready to help himself. Then, all of a sudden you must cast aside all that angst that's been building and be supportive and positive when all you really want to do is throttle the thoughtless bastard! And it is crucial that you cast your own feelings aside when the time comes.
My brother is happy, clean, working and fishing these days. We have a good relationship. I have forgiven him, and myself. It's a crazy life.
YANBU to feel the way you do. I went through a period of time of HATING people who wore petuli oil!! All of them! I didn't require a reason, but it was because his girlfriend who was his dealer's ex (the ex paid child maintainence via drugs... you get the picture) soaked herself in it. A lot of the rage is irrational. But it's all understandable.
Therefore YANBU. I sincerely hope you one day get past the rage and can be happy, I clung on to my rage for a long long time because the alternative was gut wrenching heart break and sorrow. x