So what?

Well you drink coffee in the morning so it's probable that you go to the bathroom soon after.

Oh your did laundry on Saturday the weekend? I bet your don't do laundry during the week because work. Maybe you won't be home around then...

Opened the fridge door at 6:00 pm and it was open for 2 minutes? I bet the person is hungry. Quick flash their marketing ID with ads for fast food!

Stuff like that is what they use the info for.

If you wear a smart watch that monitors your heartrate. You bet your ass they know when you have sex and when you need more condoms.