Am I missing something?!

Rating: 7/10 (15 November 2014)

When I saw the trailer for Inter... months ago my excitement and anticipation was instant, the new Chris Nolan film - yes! However although undeniably well shot I struggled with a few unanswered questions which to me were quite pivotal to the development of this future planet & the clarity of the films' exploration storyline.
***I would love to be able to reposition my stance on the film as 'epic', as so many other reviewers have stated. (although as far as I've seen without any clear justification for this position?!?!) If anyone can answer the questions I'm posing then I'm happy to hear them, and welcome them... (you can keep any 'god don't you get it?!' abuse to yourselves) Thanks.
1. Where are all the animals? They've died out I guess, but why - can't they eat corn, and wouldn't the predators of the animal kingdom without the available vegetation to eat turn to animals/humans as a food source? Also couldn't/wouldn't have scientists/governments supported cloning in an attempt to produce livestock for people to consume? (uneplained) 2. No GM crops? Although unsure exactly when the film is based, (again if someone can enlighten me, happy to hear it...) it is clearly sometime in the distant future which begs the question why/how haven't provisions been made to ensure artificial crops have been grown to sustain the human/animal population.
3. 'Any more Soufflé?' - When Murphy visits the family home to see her brother & family they're eating a meal and Lois asks if Murphy would like any more Soufflé, soufflé's require either eggs or dairy to be made... Where are they getting the ingredients. (If this proves to be an error in the film like Gandalf's wristwatch this will be the most 'epic' ever! ha.) 3. From the outset supernatural occurrences are put down to: 'they' which in Murphy's case turns out to be, well as it's explained. But the appearance of the wormhole which initially is described as a 'help in hand' from 'they', but there is no explanation of this after we learn about the reality of Murphy's supernatural experience, what caused the wormhole? My main disappointment with the film is the lack of information offered about the current world the characters live in. It's just a case of 'it's uninhabitable, we need a new one! No more questions!' Also the planets visited are a bit drab...
Also, when the team visit Miller's planet, they're away for 23 years (relative), and all that appears Romily has done in that time is grow a little (grey tinged) beard. I thought he was going to work on understanding gravity?! He had TARS to assist him in his research, come on mate, pull your finger out! he can't exactly say 'he was busy doing other stuff!' As originally stated, if anyone can give answers to my questions I'm happy to be challenged and proved wrong on any/all of these points. Although I'm pretty confident on the whole Soufflé debate... Thanks.