Out of this World and Inexplicable!

Rating: 3/10 (18 February 2015)

It's a long movie, almost 3 hours. And I didn't understand it. Here are some of the questions that left me baffled:
What was happening on earth? We saw frequent dust storms, but we also saw verdant fields with corn crops. We also saw a lake near the farm, suggesting water was available. In the distance, you can even see a home on the shore near the water's edge. Still, something disastrous was happening so dire that the human population was going to perish. What was it?
Why were farmers burning their crops?
Why did the government publish new textbooks that taught we never landed on the moon?
Murph got into a fight with her classmates because she refused to accept the textbook teaching. Really? Arguments about textbook content is a fighting matter among 10-year old children?
Coop was able to hack into a drone aircraft's computer software using his laptop. And his 10-year old daughter was able to fly it and land it using her finger on the touch-pad? Really?
Dr. Cooper had served as a pilot for NASA, but was now farming with his family. Yet, he did not know about the NASA center located near his farm. Moreover, NASA needed a qualified pilot and did not know Dr. Cooper was nearby on a farm. Really?
Cooper and his daughter Murph drive to the coordinates they have mysteriously received. The road leads to a locked gate at a fenced off area. Dr. Cooper retrieves his bolt cutters to open an entry into the restricted area. Why?
After confronted by security forces at the gate, why were they escorted inside the restricted area all the way into the center of the complex?
The NASA launch, with Dr. Cooper at the controls, required booster rockets in order to break out of the gravitational field of the earth. But when his spacecraft lifted off of 2 other alien planets, and both had gravity somewhat similar to that on earth, no booster rockets were required nor used. How did that happen?
The crew made the long voyage by sleeping in some kind of aquatic state. I realize this is a fantasy often used in sci-fi, but here's the rub. How do they come out of this state, months or years later, with no muscle atrophy? Miraculously, they are able to arise and walk about as they did before.
While on the first planet in their mission, Cooper has homed in on the beacon signal emanating from Miller's spaceship. They land on shallow water. Everyone appears to walk on the water. When Cooper sees the threat of an advancing tidal wave, he orders everyone back inside the ship. Amelia Brand is too far away and can't return in time. TARS the robot must rescue her. Meanwhile, Doyle can reenter the ship, but inexplicably doesn't. He waits until TARS returns with Brand and ensures that they enter the ship first. The tidal wave then crashes onto the ship killing Doyle who had failed to timely get back inside. Why was Doyle such an idiot?
While on the second planet in their mission, we learn that the explorer Mann is a psychopath. But what was his plan? What motivated him? Why try to kill everyone?
TARS went first into the black hole followed separately by Cooper, and the camera stays on Cooper and his journey. His ship breaks apart under the forces inside the black hole and Cooper must finally eject from the ship. But Cooper himself, enclosed within his space suit, never breaks up, never gets crushed, and apparently, neither did TARS. How did that happen?
Cooper finds himself on the other side of his daughter's room at the farmhouse. Actually, he is in the room but on the other side of her bookcase. And because of the time warp, he can see his daughter in the room and himself too. In other words, he can see the scene we saw at the beginning of the movie but from another dimension. He is now in 2 places at once. How did this happen at the bottom of the black hole?
He communicates with his daughter by moving objects such as books from the shelf. She initially attributes it to a poltergeist, but recognizes an intelligence behind the telekinesis. Somehow, not fully explained, she decodes a message which appears to be in Morse code, to read "Stay." Incidentally, who still uses, much less has memorized, the Morse Code?
Cooper then sends a message to himself in binary which appears in the dirt on the floor of the room. Again, it is never explained how Dr. Cooper is able to decode binary signals (ones and zeroes, ons and offs, whatever) into map coordinates. The coordinates identify the location of the NASA center.
Aside from the mystery of how the communication was even deciphered, why did Cooper send conflicting messages -- one saying to stay, and the other directing where to find NASA?
Later, when Murph has grown into an adult, Cooper sends her messages using the second hand on a wristwatch. These are in Morse code, and Murph is able to decode the messages and arrive at a mathematical solution that proves to be the salvation for humanity. Upon realizing the solution, she ecstatically litters the floor of the NASA Center, where she is now working, with her papers. What was the solution?
Cooper is found floating in space near the planet Saturn. He is rescued just in time. We learn that he didn't have much oxygen left in his space suit. Well, duh! How did Cooper exit the black hole to arrive at this spot in space?