Imagine the data showing you only went to bed at 2am being used to argue a car accident was your fault, when it wasn’t.
There are plenty of ways your data can be used against you and used to make incorrect assumptions about you.
There are plenty of ways your data can be used against you and used to make incorrect assumptions about you.
Note, this isn't illegal or (in my opinion) even unethical, it just makes me and many others uncomfortable. If that's a tradeoff happy with, then more power to ya!