I'm not going to help my brother with his vet bills
Do you usually give him money when he asks for it?
I've let him borrow money occasionally, yes.
I think that helping out your family is nice. I know that it is hard when they ask you for money, but it is nice to help out.
I had to put him through college so I'm not making excuses about letting him borrow money.
If you feel you've enabled him, then put your foot down and tell him to take care of his own responsibilities.