Stripping smaller gauge wire? worth it?

I usually weigh my insulated copper, strip some, then weigh it again, if the insulation is more than %60 of the weight, I don't strip it. The wire I do strip, I do it while watching tv, so I don't feel like I could be doing something more profitable with my time.

Stripped a bunch recently and decided that 10 gage an under I will strip for sure,
Maybe some 12 gage.The smaller stuff just does not yield enough so will be sold
as insulated.