You will not find anyone that will tell you No around here.
This game is great, is loved, has great art, beautiful mechanics, seriously high replayability, plays equally good with 1 up to 4 players, has no banlist, is not competitive, has some serious lore, is very thematic, and is challenging.
Quests have variable difficuly. It is harder to storm Carn Dum or beat Smaug than it is to take a stroll in Mirkwood. And down the road, when your collection has swollen and the earlier quests seems like a cakewalk, there is Nightmare mode. There are campaigns to play. You can play any constellation of three heroes you can think of, they are all there with some unknowns spliced into the mix.
You get to fight the orcs, hillmen, uruks, corsairs, nameless that gnaws on the roots of the world, dragons, wargs, and nefarious people plotting against the Steward of Gondor. You get to save an eagle, help Arwen cross Caradhras, fight the Balrog in Moria, fight the slithering nightmare that is the Watcher in the Water, find a nefarious murderer in the Prancing Pony, search the barrows in Barrow Downs for artifacts. You will unite the hillmen tribes against Isengard, battle Saruman, escort Grima Wormtounge, find Gollum in Goblin Town, flee across the plains of Eriador hunted by an army of wolves, fight the undead, help a boy that is threatened by the oathbreakers. You will get lost in the jungle on an island outside the Grey Havens, sail majestic ships out of Mithlond and battle pirates on the way. All this and much much more.... from one single card game you can play solo or co op with up to three other players. And the quests will very rarely play the same way two times in a row, and you get a new experience by just trying a new player deck.
TL;DR Yeah, it is worth it. No other game have given us in the club a richer experience. The harder we lose, the harder we try the next time. And lose you will, be ready for that. No quest is impossible with a bit of planning and learning from past mkstakes. Have fun.
OKTarg, slothgodfather, theamazingmrg and 11 others like this