JonBenet Ramsey Case

I'm sitting here watching a movie about the murder of the little girl... and just wondering.. How in the heck could the person who did it live with themself? After how big the case has been, all of the reports, and movies how could the person just stay so quiet? I could never live with myself if i ever commited such a crime, especially since it's gotten so big.
Here is a link to some info about JonBenet Ramsey's murder if you're not too sure what i'm talking about.
JonBenet Ramsey

I feel so sorry for that little girl ... her life was tough - people see the glitz and glamour of the beauty pageant scene, but the reality for young girls is things like having their baby teeth forcibly removed and being tarted up beyond their years and thus receiving unwelcome male attention.

I do hope they solve this one, one day.