You're entitled to your opinion (you shouldn't be but that's the world we live in), but I'm surprised at those few sentences of criticism to be perfectly honest. A few other opinions I've read from some guys interested in science and astrophysics were much more glowing and the elements the Nolans and Kip Thorne put in their script were quite challenging, according to them. But of course, to each their own.
Concerning it being Berbaclass's favourite film, to be perfectly honest I can understand that. When I watched Sunshine, I was absolutely blown away, and despite it not being objectively as good as classics such as the Godfather or others, for ages I was absolutely fascinated by it, by the themes it talked of and what it tried to convey (and yes zombie Mark Strong Nilsson). Sci-fi and space exploration films can leave quite a strong print on someone as they sometimes just hit a sensitive chord for anyone fascinated by those subjects.