I've read the books and played the games and I can safely say writers took a huge dump on this franchise.

Prematurely killing characters from source and not bothering to develop them before doing so, I can only assume to induce some sort of shock value? All while compensating with 21st century style pop ballads from the bard, awful awful writing.

Also, the main actor Henry Cavill has now left the show and is being replaced next season by a very silly choice of actor, all because he tried to get the writers to stick to the source better and unfortunately failed. Cast WAS great, now erm, worse...

So yeah, watch at your own behest. Season 1 is probably the best-aside from aforementioned bard. If the lore is to your liking after that, then skip the other seasons and pick up the books from Blood of Elves. Sword of Destiny is good if you want to recount some of the short stories shown in Season 1, obviously told A LOT better than in the show, duh.