To my mind a science fiction film should be either entertaining or interesting. This film was neither. It was pretentious, long winded and boring.
If it's not going to be entertaining it should at least be reasonably scientificly accurate.
Which it wasn't.
The idea of building an Interstellar spacecraft in complete secrecy with no budget was somewhat laughable given the developmental and logistical implications of such a feat. Then to employ a retired reluctant astronaut to fly it even more so.
Later on in the story, they land on a planet so massive that the astronaut orbiting it ages 60 years whilst they are on it's surface for 30 mins.
A human being on a plant that size would be instantaneously crushed by it's gravitational forces.
Not even taking in to account how the astronaut orbiting managed to find the food, water and oxygen to survive 60 years in total isolation on a small spacecraft.
To cap it all, after traveling for what would be thousands of not millions of light years he returns to find his daughter (albeit in another dimension) happily living her life.
Story line: father loses daughter, father gets daughter back again.
Sorry, I think it's a case of the emperor's new clothes.
People spend three hours of their life watching this a then are too embarrassed to admit it was rubbish. They will then go on to tell anyone who sees through this prentious ego trip as not intelligent enough to understand it.