I enjoy the theory crafting side of the game but I cannot grind 24/7 for gold cards. No gold cards = no good fun decks = no win. So CDPR expects you to pay for the cards. The game is free but it takes way too long to farm those cards. By comparison other free to play games unlock the content much faster. I'd say in Gwent it takes at least 10 times more time to unlock a single gold card compared to a one champion in League of Legends. But you need 10-15 gold cards to build per deck. So time investment for Gwent is just unreasonable. As much as I like CDPR and the Witcher I cannot recommend Gwent to any casual player.