Why?

Why have I spent most of yesterday and a chunk of today untangling yarn. More of the centre came out than should have when I was fishing for the end in the middle and it just got itself tangled. OK so it was nearly a whole 100g of yarn. But for goodness sake it’s budget yarn costing not much more than £1 for 100g. Surely my time is worth more than that!
But having got this far I just have to get to the end. Or as John Humphrys says ‘I’ve started so I’ll finish’.