[churchman phil]

You don't have to buy it!!
There is very little by way of processed food in our house. We buy fresh whenever we can. We have no microwave as I cannot abide the majority of food cooked that way. McDonalds is a no-no in my eyes and I actively encourage the kids NOT to go in that I won't take them!!
We have chippy tea occasionally (couple of times a month tops) and maybe KFC every couple of months .
I cook most nights and there is very little nobody likes.
Drawback is it tends to cost a little more but at least I get my money back knowing we're all as well as possible.

It's not the various franchise's that are entirely at fault, they are there to make a profit. Indeed they do so knowing there are plenty of people out there willing to pay instead of disciplining themselves out of taking the easy option.