I honestly think we’re on the same page here.

I do not make completely rational decisions when buying and eating bread. Other people are more or less as irrational/rational and self-interested/altruistic as I am. I want other people to let me choose what bread to eat among those available. I have no right to force other people to make my favorite bread for me. What bread other people eat is not my business. I don’t want to pay for the bread other people eat. The “finding” that people are irrational does not affect my philosophy. Neither would do the opposite finding.

I’d be interested to know what you think of the repeated finding that in real life, people do not make rational decisions.

A homemade loaf of bread is much more expensive than the supermarket one. Thus I, and almost everybody else, prefers the latter. If people wanted delicious, healthy, nutritive and expensive bread, the market would provide it.

It also seems to me that producing bread at home generates more externalities than producing it industrially, at least in terms of carbon emissions.