Is the DLC worth it?

Hello fellow nordlings,

Back in the days I never had time to play Skyrim when it was popular. Now the last month and a half I’ve been playing the game and I love it.

However I am a very slow player, and I feel like the game is started to drain. In story games I always finish up every side content before finishing the game. I’ve done every major side story, while the thieves guild and the dark brotherhood were amazing I found the companions and the civil war draining. The college was pretty good..

Now I am about to read the dragon scrolls and finish the main quests and close the Skyrim chapter, but I am asking this subreddit if I should consider Dawnguard, heartfire or the Dragonborn before ending my Skyrim journey?

Are they worth the time and on par with thieves guild and the brotherhood ? Thanks in advance!