Honestly, I don't know why this movie has gotten so many bad ratings. Yes, it's a vampire movie, and I'm not sure how much originality can be squeezed out of that genre anymore. I am totally -not- a Jared Leto fan from some of his other movies and was hesitant on that behalf to watch this film. But once in, he actually pulls off a very realistic doctor role that is also bitter on life due to his health. Of course, looking for the solution leads to the bigger story that you could probably guess by now. I'm also at a point where I'm "over it" with a lot of these superhero movies, so it was refreshing to see something different out of the MCU. If I did have any complaints, there are some unanswered questions at the end, but you know, that always leaves room for a sequel. However, on top of that, the two end credit scenes just add more "Huuuh?" and probably do more damage than good.
Not the best movie ever, but a far reach from the worst as well. A solid, enjoyable experience, at least for me. As always, your mileage may vary.