> Its a matter of practice and measure.

It really isn't.

> If you can build your own hammer in less time than it takes to drive to the store and back

You can't and your analogy doesn't hold. I've been writing JS frameworks work a decade, as have millions of other developers. They don't "drive to the store", they install their tool of choice in one second. You either build and maintain yours for hours or you copy paste code (which equates to the same).

> people irrationally fear not using frameworks for things not measured.

It is very easy to measure the hours spent.