John, Mrs. Hudson, LeStrade, and Molly were more important to him than death, which is really cool. Sherlock would not do this on his own, because it doesn't make sense. However, he believed it logical to die for those people. I'm crying!
Sherlock Quote from 4x01 │ Sherlock Holmes: What is that? (balloon with a face drawn on it) John Watson: That is… me. Well, it’s a me substitute. Sherlock Holmes: Don’t be so hard on yourself. You know I value your little contributions. John Watson: Yeah? It’s been there since nine this morning. Sherlock Holmes: Has it? Where were you? John Watson: Helping Mrs H with her Sudoku.