Undeservedly praised!

Rating: 8/10 (18 November 2017)

I had high expectations coming into this movie mainly due to its high rating and the users' reviews that I saw were praising this movie as the best ever in sci-fi genre. Well... it was and entertaining movie to watch, fun and enjoyable but with some serious issues which I'll be tackling down bellow:
1. The science: This movie just like 99% of the all sci-fi movies wants you to believe that artificial gravity can exist in a spacecraft no matter how the spacecraft is or how it moves. Take for instance Interstellar(best sci-fi in my opinion) that tackles this notion and many more to be a complete package that doesn't have the old film school's clichés about gravity in a spacecraft nor the extravagant sound in space where there's no air to conduct the sound waves like it is in this movie. Also releasing a shuttle while orbiting a planet makes the shuttle fall like it's only a couple of miles from the ground.
2. Little to no explanation on who are these creatures, what do they want or how are they able to grow in sooo many numbers as depicted in the film so that the soldiers might have something to kill.
3. The aliens motives were always changing. For example at the beginning we see one killing the crew of a shuttle in order for the shuttle to not reach Ripley and the soldiers also dying(the alien) in the process, while at the end because it implies Newt(somewhat Ripley's daughter) the Alien kidnaps her and tries to make her a host for a new xenomorph. What's the logic here? Do they have intellect in order to assume which people is worthy of dying and who is worthy of being a host? The movie never tackles that and since I don't understand their motives I'm gonna call it a sin(see Cinema sins).
4. There isn't a Alien movie without a robot/droid dying. Here somehow the alien queen or whatever that alien creature was ties itself to the shuttle Bishop was flying at the end although we clearly don't see any sign of it on the shuttle(and yes there's a clear shot of the shuttle in full flight in which the craft looks clean, no alien tied up) but surely we don't want to show it to the audience to ruin the surprise from later on when the queen breaks Bishop in half.
5. In the end just to create more tension in the film we see this: Ripley opens the outside door from that pit she, her mechanical costume and the alien have fallen into, but then after the alien falls into the outside void why in God's name doesn't she closes the outside door with the same switch she used to open the door and to which she was next to on those stairs. Instead she has to climb all the way up to the platform on which the shuttle landed and close the outside door with a switch that's next to the inside door. The movie never tackled that thing on why she couldn't close the outside door with the switch she initially used to open it and why she had to climb all the way to the platform and close it from there. I just started laughing when I saw this much stupidity, but of course that's what a James Cameron movie has sometimes(see T2: Judgment Day).
I could go on and on about the positives but most of them have been already written on so many favorable reviews this movie got, so to sum this up: This is a fun movie with excellent action, great characters, good music and awesome special effects. But for me that isn't enough if your story is filled with drag moments only there to fill the runtime or create unnecessary new twists and turns or suspense. It's an 8 from me for this entertaining but flawed movie.