This is another slightly cheaty answer. I actually really liked Hearthstone when it first came out, but got bored of it really quickly. It appealed to me, yet did not grab me in any lasting way. I found it frustrating and usually just had something better to play or do when I was at my computer.
This changed when Blizzard released Hearthstone on Android.
As I said at the time, the game really found a home on mobile devices, at least for me. It is perfect for those devices and I am now playing it a lot.
So I never really hated the game as such, but I certainly went from utter indifference to really loving it, once I had it on the right platform. I’d love a good version of Magic: The Gathering on there, too.
Here are some screenshots of me loving Hearthstone: