lotdot19, wouldn't you like to start your own thread so that others can share with you too. this post may get lost here and not get as much attention.
i think you and your mom is doing what is best for your brother. he wants you to feel guilty enough to allow him to continue his drug use at your expense. if he had money sounds like he would probably buy more drugs and if he really cared about food, he might have used his money for that instead of all on drugs.
take care of yourself, he'll probably be more willing to help himself if he's allowed to suffer the consequenses of his own bad choices,