The greatest strength of "X-Men: Days of Future Past" is character development. What I mean by this is that you will be able to reciprocate with the characters and their rich emotions as they face conflict after conflict.
In this movie you will see the "young" Charles Xavier (Professor X) and Erik Lehnsherr (Magneto) and their very human sides: flaws, despair, hopelessness, and ambition. The tension revolves around these fragile human qualities that have been hidden from us in previous sequels.
The ratings are very high, so I confidently recommend this movie. IMBD and Rotten Tomatoes have both given it a near 9/10. Go watch it, you don't need my persuasion.
I strongly believe that if any movie obtained at least a 9/10 rating from you, then that movie has carved a mark on you that may have a lasting impact on who you are in the future. This movie surely gave me lessons that I will gladly take home. Encouraging words that will hopefully shape me in a positive direction. It's from the dialogue between the young and old Charles Xavier.
Old Charles Xavier: "As frightening as it may be, that pain will make you stronger. If you allow yourself to feel it, embrace it. It will make you more powerful than you ever imagined. It’s the greatest gift that we have: to bear that pain without breaking. And it comes from the most human part of us: hope. Please, Charles we need you… to hope again."
Any negatives? I felt that the ending was a little disappointing. The movie was long enough but if it were a happy ending, why not make it a jubilation instead of ending it abruptly in a slight melancholic tone? Might be a personal taste but I thought the ending could have been more solid.
Overall rating: 8.8/10
A complete movie... except for the abrupt ending.