Answer:
I don't live within a house nor do I live without. Most will use me when they come in and again when they go out.
If I drink, I die. If I eat, I am fine. What am I?
You are my brother, but I am not your brother. Who am I?
I am a popular afterlife location to send evil people
I may only be given but never bought. Sinners seek me but saints do not. (one word).
Often cooked as fillet, this meat comes from an animal that swims underwater.