Analytics driven development is like flying a plane on instruments only with all the windows covered up. I mean, sure, you'll get there, but compared to flying normally you are missing out on so much.

Watching individual user sessions from session recordings provides more depth, but you are still missing out on great swathes of information.

Analytics and session recordings don't give anything near as much concrete data as taking the time to engage with your users. You then use analytics to confirm behaviour.