Haha. As a consultant, I worked on a crapton of IoT projects. Not a single one could explain WHY they needed all that data. If you're just storing user actions, it's not really useful, or actionable.
I made coffee at 8:03 am on Tuesday, did laundry at 2:39.873 pm on a Saturday, or opened the fridge door at 6pm and closed it at 6:02pm.
So what.