Question Number One: I absolutely love Sherlock Holmes.
Question Number Two: Ouch!!
Difficult to say, really.
Perhaps because there would be no crime if he were real. I started reading Doyle's (Dr. Watson's?) stories about Holmes in about 1967. I was nineteen. My little sister was twelve. She was very excited and happy when I told her about Holmes.
A few decades later, my sister and I found out that someone we love very much had shameful secrets. I've always wondered if perhaps it might have been because of things we learned from Sherlock Holmes that we were able to see through this person's outer appearance.
Of course, my own generation's iconic Holmes figure was Basil Rathbone. Later --- when I started reading on my own --- I found out that the Basil Rathbone - Nigel Bruce movies are not faithful to the "canon". (Still pretty good, though --- if I remember correctly. I'll have to look them up again.)
I've been reading about some of the new "Holmes" authors, as well. I think some of them might be pretty good. I'm especially looking forward to reading the one where Holmes is called to the Vatican by the Holy Father.