Yeah because some people can't/won't actually try to remember things.
https://en.wikipedia.org/wiki/Magic:_The_GatheringEach game of Magic represents a
battle between wizards known as planeswalkers who cast spells, use artifacts, and summon creatures as depicted on individual cards in order to
defeat their opponents, typically, but not always, by draining them of their 20 starting life points. "Excuse me while I get my pencil/pen and paper out while we are in the middle of this battle". Which in now takes away the fantasy of actually being a wizard/planeswalker.
the gameplay
bears little similarity to pencil-and-paper adventure games, Again takes away the fantasy of actually being a wizard/planeswalker.