All I read about on the internet when it comes to QS is "look at all the stuff I collect, isn't this fancy?". How come so incredibly few post "hey, you know all

All I read about on the internet when it comes to QS is "look at all the stuff I collect, isn't this fancy?". How come so incredibly few post "hey, you know all this data I collected? Here's how it has changed my life for the better/worse". Who cares about data if you are not acting on it and reporting back on results/progress?