i love it, i'm an avid rpg player, played bg, iwd and others with vancian casting, in no circumstances i found vancian casting to be a good choice you can avoid rest-spamming or spell hoarding only from the second playthrough since by then you know where big fights are vancian casting works for tabletop because the dungeon master decides when the party can rest and can balance the fights on the go to avoid ending a campaign prematurely (there's no save/load in real life, duh) vancian casting was brought in videogames just because those games were actually video game editions of tabletop games and changing AD&D from 'vancian' to 'per encounter' or 'cooldown' was too much of a hassle