You only sacrifice for those you love...it can be a cause, an idea, a person.
I would personally never sacrifice for a person unless they embody a cause, an idea...even then I would probably have a tough time doing so...
I know that sacrifices exist but am getting tired of them. Not because of the sacrifice, but because no one is really worth it. Except maybe a few.
Maybe the sacrificer is a mighty gambler, and betting on the few.