Because those who neglect the lessons of history are doomed to repeat the same mistakes others have made in the past. This is the only passion in life I have left now; to be a "warner",a voice crying in the wilderness, nobody was listening in 2003 when I was screaming at the top of my lungs that Iraq would become a new Viet Nam. Nor about conventional warfare in Afghanistan, when I advocated a massive strike against al Qaeda strongholds alone. Now I'm a broken old warrior scheduled for a backwater posting for my final tour before retirement. Maybe completion of my PhD and an academic chair at my alma mater will serve as a "bully pulpit", should I decide to live. +5

So we remember the atrocities committed and strive to never repeat them.
+5

If history is forgotten it is doomed to repeat itself.

+5

to learn from the past

we sometimes really do not want reminding of history and i all ways ask why is most of the history we are taught is about wars and tragic events . +4

For some,its a need to learn how to repeat 6 thousand years of mistakes

I dont think we need to, only those who like it should study it.

Lets see, maybe to learn about the past.

to learn from past mistakes +5

Because to understand what's going on currently, you need to understand the past. There's a saying: history repeats itself and it's quite true. Most of the things going on around you went on in the past.