Some people will like this movie, some won't - nothing in the world wrong with that. To those who like it, I say, "Great. Glad you enjoyed it. But please DO NOT say that it is historically accurate!" There are literally thousands of places on the internet where you can find where the movie was inaccurate; an example is here.
That is not the best or the worst site, just an example. I have been surprised that there has been so much discussion about the accuracy of the movie, because in the general scheme of things, it did nothing to change, alter or determine the course of history. It became a legend long after the fact primarily by people looking for heroes and this was fertile ground since few then (or now) really knew what happened there.
Please note that I am not in any way commenting on the movie as entertainment. That, to me, is a personal choice of the individual, and I am happy so many like it. But also remember that to make a movie like that entertaining it must at times "film the legend."