I Have A Theory…It Could Be Bunnies?!?
My theory uses general themes from Supernatural and Weeds to rationalize Torchwood: Miracle Day…
SAM WINCHESTER AND NANCY BOTWIN SLEPT TOGETHER - Since everyone that sleeps with them dies, when they “had relations” it halted the natural order, thus causing Miracle Day.
The power of their union also brought back Ianto, Gabriel, Owen, Ellen, Tosh, Jo, Rufus, Ash, and many more. It caused many canon changes and made all of fandom sublimely happy!
I apologize and I’m going to sleep now :)