The title of this post is "Something we should all have in the shed"
If I was running or working in a commercial workshop yes I would use a torque wrench. If a thread strips and you aren't using one it is your fault. Simple as that.
For my own shed I don't use one all the time, but on certain things it pays too. eg the triple clamp bolts on USD forks. They have a lower torque so you don't restrict the movement in the tubes.
I still say the stocked beer fridge is more important.
