I think a writer's career consists of about 90% writer's block. However, the reason we all do it is for that little sliver, that 10% of the time when your writing feels unbeatable. You'll see something that breathes inspiration into your hands like a gust of wind or a calm, gentle breeze, and the proverbial cork will be unstoppered. The words will just come, overflowing like bubbling champagne. They'll race through your head and caress the tips of your fingers, begging for escape. You could write for hours, and you'd never tire. All you hear is the pen carving the paper into poetry, and all you see is the creation of language. So, no, to answer your question, sore hands don't bother me.