Grind kills every game for me, I can't stand doing the same thing over and over for hours. Even for games like Path of Exile, super fun until I have to grind for currency or gear and I just stop playing.
Intelligent grind is good, when it become some dumb chore like kill 300 mobs or talk with a character everyday for 3 months become boring, I like at least some progression feeling
Depends on the game. Non-Ero games I can grind like D2 and PoE each season for weeks.
For Ero games it's different. I don't want to grind a long time for a tiny reward that wasn't worth it. Some longer grindy games like ERA/Monochrome Fantasy, etc. are more marathon and have a big payout near the end which have fun day to day interactions and are enjoyable despite the grind.