[mbfg]

the advantage of fast-food over groceries, is that you don't have to worry about spoilage and waste. So the delta is probably less than you think. Now granted McD is an s-show, they are no longer the restaurant of the poor, You likely can get a better burger meal deal at a Chilis than a McD, as sad as that is.

[ac29]

Even if you waste half your groceries its still cheaper than eating out. And wasting that much is difficult to do, most staples will last weeks to years without risk of spoilage.

There are some fresh fruits and vegetables that are exceptions because they dont take well to refrigeration or freezing but really not much.

[mbfg]

also, there is the case of the mismatched quantities for shopping, ie, the old hot dogs come in 10 packs, and rolls in 8 backs, etc.

[strken]

This is just wrong. Beans and rice are more than an order of magnitude cheaper than McDonald's per calorie and they're non-perishable. Combine that with whatever fruit and veg is affordable fresh or frozen, a bit of cheap seasoning, and you're still coming out ahead.

You obviously need access to cooking and storage facilities to eat like this, but the target audience of McDonald's is the time-poor, the resource-constrained, or the depressed and disabled, rather than just the money-poor.