Because he doesn't like killing. He craves the danger but he doesn't like the idea of killing even the dog. That's why he closes his eyes. < also most people just close their eyes when then shoot a gun.
Sam Winchester moves in with John Watson ( Supernatural and Sherlock ) <<Then why isn't the shirt rack on top and the shelves on bottom? John will never reach his sweaters and Sam is bending over to grab a shirt.
30 Best Sherlock Quotes from 'The Six Thatchers' (4x01
From now on I want my coffee served by this man and with that smile! And did I mention I drink at least 5 cups a day? It'd be simplest if he just moved in with me :)(Oh that face is possibly the cutest thing ever!