You've no doubt heard complaints about the violence. I'm apparently desensitized. If you look at things from the standpoint of what's commonly seen in movies, it's simply not severe. Perhaps the difference is most of those stories are entirely fictional, whereas this one was perhaps worse than the truth due to artistic license.
On the flipside at least 2 members of the audience were really bothered that God would let his son die in this way. One of them seemed to be looking for the answer to "why"... because, no one's answered it well for nearly 2000 years, clearly at a movie discussion someone would have the answer.