Thoughts on the ending

Rating: 8/10 (8 January 2019)

Spoilers here so don't read if you haven't seen the movie. In the end, what gives about the blind people? A) Why was her doctor there? Never explained. B) Who was feeding/taking care of the blind people? C) Whoever was taking care of the blind people (supplying food, building things) would be exposed to the monsters, right? So how did they remain safe? How will they venture out in the future to get food/supplies to continue living?
These questions are not answered, but hit me the second she walks into the blind school with the children. Also, the "blind" thing was used in the movie "The Day of the Triffods". Anyone remember that one? The entire earth goes blind except for one man who had his eyes covered. This move leaves too many questions.
The monsters make you kill yourself by making you sad, scared.....then chooses some people to make them think it's beautiful? Interesting concept, would have liked that explained more.