Silly mouse, a good reason must be something like, "It defines my way of living" or "Shipping R/Hr is what helped me over my crystal meth addiction." It can't possibly be because you like the pairing or because the author likes (and is writing) the pairing. It has to have a deep and spiritual impact on your life.

I'm the type that doesn't even think about 'shipping unless I feel the author is strongly hinting in that area.

Oh, me too. I didn't even consider shipping in the books until the Yule Brawl. Then a little light bulb went on over my head and I knew it would be R/Hr.