Wow pretty harsh! :-) You remind me of the guy in the Simpsons who says "Worst... Episode... Ever!" and the three dorks who show up to the itchy & scratchy panel to complain that the sound that the rib cage harp makes is wrong or something lol.
If we went by your standards we'd never get any kind of fun fiction, it'd be movies about spacewalks to fix broken heat exchange pumps on the ISS. We'd never have got "2001" or any other classic.
Remember: this is for as wide an audience as possible while keeping it as "hard" science fiction as possible and I think they pulled it off pretty well. The vast majority of the population doesn't know what hexadecimal is. It's not for you, it's for your brother in law and millions of other people who won't know the difference because it looks real enough. It's better than having zombies show up! (check out "Last Days On Mars" if you want that)
Remember too that this is in the near future, like 20 years, so they may have developed new materials that make having large windows on board a space ship ok. Andy Weir, the author of the book, said that he pretty much ignored the whole radiation problem in order to be able to tell the story but the new material or coating or whatever is what explains that. It's nice of NASA to make the ship as comfy as possible for this long-ass mission.
The MAV launching in the storm, well it's better than letting it tip over. It was a risk but one they had no choice but to make. It's either launch in the leaning MAV or watch it tip and they all die.
Watney explains in his vlog that the antenna fragment and his coagulated blood seal the suit (come on give the story a break, it's fiction!) and his suit is designed to keep him warm and provide oxygen for a long time. So making it till morning is no big stretch, he's woken up by the low oxygen alert.
Yes the gravity on Mars is weaker. Too difficult to simulate, too disruptive to the plot. No big deal. Also note that he's wearing a very heavy suit.
And the computers, well again this is 20 years into the future. In 1995 if you watched a movie thaty showed somebody with a pocket computer that could make phone calls and give you directions and answer questions and have the kind of animations n stuff that your common smartphone today has you'd have laughed and said it was stupid and unrealistic. Maybe the data center in which the supercomputer that he uses is air gapped or he went in for unauthorized access. Plugging a cable in to a computer will save you the trouble of hacking it over a network! And the message that says "Calculations Correct", well I have apps on my smartphone that give notifications that are as lame as that. It's for effect.
The last 15 minutes of the film can be safely ignored and chalked up to the need to give the ending a big bang for the audience. It's fine. Could have been much worse.
Worst... Complaints.. Ever!! :-)