it is perfectly legal to sell someone poison and call it food? How about expired food, a lot of stores do that, they don't even bother to check the expiration date and people buy it and eat it without checking the expiration date. Just ask Boxley about some cheese that he bought that way and the time he had to spend in the ER getting his stomach pumped.
This is not relevant to the discussion at hand. If you have evidence that McDonalds sell products that are, in the eyes of the law, unfit for human consumption, please show it. I should note that I'm not particularly interested in odd cases, because accidents happen and employees foul up - what you are claiming is systematic sale of unfit food. If something is actually harmful per se, then it must be labelled thus. Burgers are not actually harmful per se.
In any case, when McDonald's and KFC first came out, they told mothers to take a break and buy food from them instead of making it. That the food was the same from their place, as the kind she made. Which was false. So moms started bringing home a sack of hamburgers or a bucket of chicken instead of making a meal.
So? "Moms" are grown adults, who vote and drive cars. They are capable of making informed decisions about what to feed their families. Apparently.
Corps can get socked for selling contaminated beef that has the "Mad Cow" disease in it, but not for gut busting hamburgers that can cause colon cancer?
Evidence?
Is this some sort of SNL skit, like where they sold dangerous Haloween costumes and dangerous toys, and claimed that it was not their fault?
No.
I want McDonald's and the others to serve healthy food, so that others do not get the same problems that I got. Is that too much to ask? Selling healthy food? Most Fast Food is not fit for human consumption. But they don't care, as long as they make a buck. They don't care that loyal customers like me suffer so much pain and discomfort.
What is "most fast food", and why is it "unfit for human consumption"? If you mean that fast food alone is not a balanced diet, then you'd be right. That's where your cognitive abilities come in, and you EAT SOMETHING ELSE.
McDonalds have no obligation to you beyond selling you products that are fit for human consumption in the eyes of the law, and are producing using a process that breaks no laws. As long as McDonalds comply with all relevant legislation, they are discharging their responsibility to you, the customer.