What do you mean "times that didn't exist?
I don't mean that the "time" didn't exist, because obviously it did.
What doesn't exist, is your perception of what "happened", such will always be flawed. For a great number of reason (you should look into it, very interesting stuff). Flash bulb memories, etc.
Specifically speaking to morals, the perception is everything. At a young age (relatively speaking here) you value the morals that you were taught, and that you had absorbed, are always going to hold higher standing than the ones you learn later, unless you are able to remove that specific bias.