One of the things I checked on shortly after I started playing the game was what Challenges there were.

In Fallout New Vegas, it was along the lines of use specific weapons, inflict X amount of damage, do this story point in a particular way, etc.

I was disappointed to discover there aren't any for Fallout 4.

And given this fact, I doubt they can add them retroactively, as we've played part of the game now and any story related challenges would be impossible to achieve now.

Why didn't they put Challenges in Fallout 4?