it's not even debatable at this point that putting money into hearthstone is not worth it anymore, packs are horrible value.
Adventures were great value otoh, I gladly bought every single one... and now they got rid of them. With three expansions every year, I wouldn't spend a single dime on this game anymore, it's just foolish knowing what a terrible value 50 packs are, with 20 bucks you got 5 legendary, some epics and a single player adventure, you're not getting half of that with a set preorder that cost more than twice as much. The game's economy is no longer sustainable to me personally and I've played for almost three years, I can't imagine what a new player does. You need like 150 packs from each set to get to experience the meat of the expansion and its core mechanics, they're even doubling class legendary cards with increased focus on them more than ever. You want to play quests? well there are 9 different legendary ones... well good luck with that most of the playerbase.
but here, have a old gods pack!