User blog comment:HambleBee/Pros and Cons - The Dark Brotherhood (Skyrim)/@comment-24.131.157.227-20180325200431

You forgot to add that after the questlines up you become the master of the whole lair so you basically get a free huge home, on top of shadowmere the unkillable black horse and the better shrouded set once all is said and done-the ancient set. (: those items are very powerful and make it all worth it.