Everyone already replied with their use cases and I've been in several similar ones.
In general, I obtain a huge amount of value in being able to know what happened in my own past. This can be both for work and for personal reasons. For this, my calendar and Google Timeline are the two tools I use the most.
Most usefulness is in the past 1-2 weeks, and things become less useful over time, right up until they become extremely useful. For example "Oh crap, I lost this thing, the last time I saw it was on this date. What are the possible places I could have lost it? Let's retrace."
It's hard to convey how much things change once you're able to reliably have this information. Your mindset changes. Things you couldn't do before are unlocked.
I would love a better Google Timeline, one whose data I personally own especially. I suspect there will be an explosion of these types of apps at some point once people catch up.
In general, I obtain a huge amount of value in being able to know what happened in my own past. This can be both for work and for personal reasons. For this, my calendar and Google Timeline are the two tools I use the most.
Most usefulness is in the past 1-2 weeks, and things become less useful over time, right up until they become extremely useful. For example "Oh crap, I lost this thing, the last time I saw it was on this date. What are the possible places I could have lost it? Let's retrace."
It's hard to convey how much things change once you're able to reliably have this information. Your mindset changes. Things you couldn't do before are unlocked.
I would love a better Google Timeline, one whose data I personally own especially. I suspect there will be an explosion of these types of apps at some point once people catch up.