Your brain deliberately forgets trivial stuff. Do you really need to remember every lunch you had? Same goes for all the mundane stuff in history.
On the other hand so little of the mundane stuff was recorded that when we do see it it can be a window into how people actually lived, like Samuel Pepys diary. The daily stuff was so accepted as boring and common knowledge that it wasn’t considered worth recording.
Does it not pierce thine very heart? (startrek.website)
More people died by the spear than the sword, and if you don't like my opinion, I'll shove it up your ass with sharp stick! (slrpnk.net)
Wikipedia is the real black hole (lemmy.zip)