Nowadays I also often get worthless things as rewards in Steem Monsters/Splinterlands, but I recently started to play the game actively again, because I received some valuable items too. And, as the amount of reward cards are dropping, their value will probably go up. My highest league in the current season is currently Silver II, which will mean 15 loot chests at the end of the current season. I am looking forward to it, and I am planning to play the game everyday.
I will plan to play every day again and actually end up playing one or two days like I did the last few seasons.