There's also the price thing though. Fast food is cheap compared to home made. Take the pizza for example. Unless you have some of the stuff already, and even then, making a pizza is prohibitively expensive. Last time I made pizza, I made my own dough and sauce, I had the cheese already. The pepperoni alone cost around 5$. Imagine if you don't have the stuff or know how to make the dough or the sauce yourself? That price jumps from 5$ to somewhere between 10$-20$. If you are weird and don't have cheese in your house, tack another 3$-5$ onto the cost, and that's just for a pepperoni pizza. If you want something more complex, you need mushrooms. 3$-4$. or maybe sausage, 5$-8$. Unless you have stuff on hand already, or just want a cheese pizza, making a pizza is expensive.
Another example, a very good one, is the cheeseburger. Lets take the standard cheeseburger, beef, bun, cheese, mayonnaise. If you have 1$, you can buy a cheeseburger. cheap as fuck right? If you want to make a cheese burger and don't have any of the stuff on hand, it can cost anywhere from 3$ (for just the buns, because who keeps something as specific as hamburger buns around?) to 20$ (for everything, which is unlikely because who doesn't keep mayonnaise?)
just to keep with the meaning of the thread, here is a picture of a bed with cheeseburger pillows and blankets.