Spending on this game make devs keeps the game operate, if people have "no spending" mindset like you a game won't last long and eventually closed. E.g: some square enix random ass games. I personally only spend whenever there's cheap 3packs+UR bonus deals, didn't spend much but at least I support the devs to keep THIS game ALIVE.
cards go bye bye if your cards are stolen,
cards go bye bye if your house is on fire,
cards go bye bye if you on drugs and have no money,cards go bye bye if you don't behave well in school and your daddy tears them up and you cry to mommy and mommy slap you in the face!