I started with DCSS and I played Nethack a few times. After reading some of the spoilers and realizing what I would have to memorize to win the game, I stopped playing it.
DCSS focused on tactical encounters which I enjoy a lot more than reading up what word to inscribe on the floor to make myself invincible or whatever.
I still enjoy the idea of Nethack, it’s very clever and incredibly deep, it’s just not for me.