The real reason she may not want to run in 2016: Bill Clinton...they have lived apart for YEARS and she does not want to have him back in her house which he would demand if she were to take hold of the White house...Some things are just not worth it and he’s ONE of them!
I actually believe her. I really don't think she wants to run. I think she'd rather retire and shack up with her live-in girlfriend and grow old. It's Bill that wants her to run. In the book "The Amateur", it was made pretty clear that Bill was pushing her the last time around - and this time too. It's Bill who wants back into the White House, and I think she realizes this and doesn't want to give him a "third" term.