It's easy for me--with a big refrigerator--to shop my pantry. I hardly ever NEED to go to the store. I always have something that will make a good dinner. College Cooks may have problems. Some might have teeny refrigerators with freezer space that will hold only a single ice cube tray. Groceries are heavy and bulky, so there may be issues with storage space. Plus, some College Cooks don't have cars (mine doesn't). Groceries may be distant also, even if you're willing to walk.
I have fond memories of trudging through the snow in Bloomington Indiana, carrying a grocery sack. Really. Fond.
Ah, the halcyon days of grad school! College Cooks now have better options in many areas. Of course, job opportunities in the humanities are even worse than they were then. At least computers are available for papers! And the internet for research!
And aseptic packaging for the College Cook.
You can have a small part of your bookshelf for these great supplies: broth, tofu, pasta sauce, soymilk, milk. Photos from Amazon are for reference only! They are often--though not always--expensive. Still, if you are in dire straits, without transportation or time, Amazon will deliver to your door. This may compenste for the higher cost. Not too shabby a choice.
My view: My favorite of the above would be the TOFU. This would make that ubiquitous ramen (which I would guess has all the nutrition of a potato chip) into a fairly healthy repast. Add some spinach for your veggies!