I felt it was overly predictable and uninspired. It felt like there were to much overextended scenes of the sciency type explanations and NASA/crowds cheering for everything that happens.

There were far too much characters introduced and most weren't developed - some didn't seem to serve a purpose, aside from one scene, if that. I gave the movie a 5/10, it's far from a bad movie, but everything about it felt average and I thought Interstellar and Gravity were more entertaining as far as recent space movies go. The Martian lacked substance and emotion - I never really found myself invested in anything; not to mention the lack of tension, it felt like it kind of just dragged on to the end I concluded about 20 minutes in.