I love Jim Jarmusch, and felt Only Lovers Left Alive was a sweet movie about lovers throughout the centuries, their weariness with their vampiric existence, and their appreciation for safety, and true friends. It really only scare-startled me once, and that was the very end. I didn't find it pretentious, because they were pretty glum characters, who were struggling to find the beauty in the world after living for so long. They weren't high-falutin' at all, or putting on airs. They were... shabby.
I loved the movie.