For sentence one: Look at it like this, 'He loves his life' and 'She loves her life' are obviously correct. Now, when we we say 'People love their _ .', we can mean two things: They love their own lives (separate lives) . They love the life that they are having together or share. Example: 'Software developers love their life' would mean that software developers love the life of software ...
Unforgettable: Created by John Bellucci, Ed Redlich. With Poppy Montgomery, Dylan Walsh, James Hiroyuki Liao, Jane Curtin. Homicide Detective Carrie Wells has a rare condition that causes her to remember everything precisely.
Unforgettable is an American police procedural crime drama television series that premiered on CBS on . [1] Unforgettable was developed by Ed Redlich and John Bellucci, and stars Poppy Montgomery as Detective Carrie Wells, a police detective with an unusually detailed and photographic memory.
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Unforgettable stars Poppy Montgomery as Carrie Wells, an enigmatic former police detective with a rare condition that makes her memory so flawless that every place, every conversation, every moment of joy and every heartbreak is forever embedded in her mind.
Unforgettable (2011) follows Carrie Wells, a former police detective with hyperthymesia—the rare ability to remember nearly every detail of her life.
Here are thousands of instances of "our life is short", and I seriously doubt many of them are specific to the lives of, say, a couple living together. It's perfectly normal to refer to human lives collectively in the singular.