UngeheuerLich
Legend
I think that is the most important aspect why they are gone.Wait, you have players actually use background features? Wow.
In 10 years of playing 5e, i can count on my fingers and have spare for the number of times someone used those in any game i played or ran. Same with traits, bonds, flaws, ideals.
I also can count on my fingers the times they were used, and when they were used, it saved a few coins or a skill check at most.