I think that people enjoy cards, especially now when steemmonsters increased possible cards from 10 to 30 and cut the reward, f.e. in silver you earned at every level (I,II,III) 5 cards a day and now only 2,3 or 4 cards (I,II,III) and also the seasonal rewards is cutted for Bronze III and all silver levels for 40%. This both reasons make the cards attractive I think.