The history pivot for my contacts shows two weeks of interactions with the contact with the most recent interaction at the top. If I scroll all the way down to the end of the "2 weeks ago" section, there is a "more" item to load additional history. I don't know if the 2-week limit is just something to do with the history pivot or if it's picking up the 2-week email retention that I happen to have on my mail accounts.
Why does it bother you to have ready access to this data? My default pivot is the Profile one, not History, so I never even see the list unless I switch to it to actually look or something.