I love Gwent. It is not a perfect game by any means, but in spite of what people say in other threads, the good outweighs the bad by far.
For one, the game is very generous in how it allows players to collect cards. Ive only played the game since late June, and I have almost 4 complete factions and all but a few of the neutral golds--this after originally milling three factions down to zero, including leaders. If I had been smart, I'd probably have the entire collection by now. Granted I do play a lot, but its nice to know that my hard work leads to tangible results such as getting that new gold card to better tweak a deck.
The artwork is leaps and bounds ahead of any other CCG out there. Sure MTG has some nice artwork as well, but the inconsistency between artists is almost laughable at times, for example, having a really menacing creature played beside a cartoonish looking fairy. Gwent uses several artists as well but the look is realistic across the board, and the 3D premiums are amazing. I love transmuting cards to see the difference. I get to hear the audio as well.
The strategy and variety of cards is in a class of its own. Ok, maybe MTG has a leg up on CDPR, but considering how young the game is, and what can be done with the existing card pool, the game is incredible. So many people whine because not every archetype works, but meme decks are fun in their own right and there is still time to flesh them out. I just wish people would be more appreciative and give CDPR a chance.
The frequency of patches and fixes is outstanding. At least once a month. People complain because it shifts the balance, but if that werent the case, we would have the same dominant decks since the beginning which would be boring. Patches keep the game fresh and interesting, and they will bring more cards in the future.
These are all things that other posters have touched on. So its easy to see we have a good thing here, haters be damned.
Long live Gwent!