Board Thread:General Discussion/@comment-26159109-20170417104929/@comment-25926288-20170417130716

Well, a lot of those answers are practically related to the fact that there's often alot of plot contrivance, that their magic system is broken to a degree, and convenience.

To answer the answerable questions,

Hook having love would be different from having an obsession about killing someone. Simple as that. Hook also didn't know Snow and David were asleep there (not dying). I don't particularly favor Hook, but he did nothing wrong. Emma chose to save Hook because her parents told her too. Plus, she knew that they would find some other way to save them. (At the rate those flowers were sprouting, they'd probably get another one, lol).