Tightening fixings by feel seems to be a lost art. Typically gained early in life after a few stripped threads!
TBH working to actual torque figures rarely works in my case as they usually refer to dry fitting. More often than not I've put a blob of grease or copper slip on fitting, particularly if exposed to road dirt to ensure it can easily be removed later. Use of nylock nuts or even spring washers under plain gives confidence. Keeping in mind the material you are working with plus it's thickness in the case of tapped holes, even thread pitch helps as well.
Thinking hard, I can't recall anything coming loose. This is not to say there aren't occasions I do use a torque wrench though, on internal engine parts or safety critical components for example.
