Why would a Christian dislike history? Probably because they've consistently been on the wrong side of it.
Within our own nation Christians were a major force in supporting the continuation of slavery, and used scripture to justify it.
Christians also lead the fight, bled and died to end slavery
Conservative Christians opposed womens suffrage and used scripture to justify their actions.
too bad they didn't win. I kid, look up Susan B Anthony and the impact her faith had on her
They currently oppose equal rights for homosexual couples, and once again try to use scripture to justify their bigotry.
I know many Christians that could give a whizz about gay rights, me included. Let them marry.
There's the inquisition which was also justified through scripture, with such loving language in your holy books that proclaims blasphemy and witchcraft to be capital crimes.
when's the last time someone was executed, jailed or anything for this? By Christians.
There's the selling of indulgences by the Catholic Church.
In current history we have the rampant sexual abuse of children in both catholism and many Protestant sects.
Eric Rudolph, the Army of God, the KKK and countless other Christian hate groups who have blown up abortion clinics, killed doctors, and attempted ethnic cleansing all in the name of your god.
Christians also hunted him and his ilk down.
If you want to go old school with it: according to the text your just and loving god hardened the heart of the pharaoh so he could torture the Egyptians some more; he allowed satan to torture Job for being too good of a Christian; The eradication of the canaanites; Moses telling his men to kill everyone but keep the young girls for themselves.
I think that's enough for now.