I won't play action games without an easy mode anymore. I've beaten all Dark Souls games and I just got tired of proving myself over and over. Nowadays I just want mild challenge and the certainty I will win after trying a couple of times.
There’s also an accessibility aspect to it. Accommodation for players who may have different physical capabilities is just the right thing to do.
Same with Bioshock Infinite that needed a hack to unlock "1999 mode" or Bloodstained its harder difficulty (still easy, though).
Balance and fair difficulty really are some of the hardest and most important things to get right in video games.