She knew from a young age that her sole 'purpose' (in life) was to be a writer. [=she knew that all she wanted (in life) was to be a writer]
We were happy to know that the money was being used 'for a good purpose'. [=for something useful, important, etc.]
There's little/no 'purpose' in restarting the process. [=there is little/no reason to start the process again]
(..) I'm looking for what might cause someone to have a silver smile? What did he say? He said mercury salts. For what purpose? He said, "One night with Venus, a lifetime of Mercury." Thank you. You know there's people gossiping, you with that girl. (..)2018 TvShow: The Alienist Title: These Bloody Thoughts Season: 1 Episode 4
(..) - Yes. - She's from a good family. She was soon married and quickly gave birth to a boy, and a year later, a girl. If the purpose of this story is to annoy me, then you've succeeded. The purpose is to make the point she's quite similar (..)2018 TvShow: The Alienist Title: These Bloody Thoughts Season: 1 Episode 4