Why does sandwich bread only come in such huge loaves?

Hello,

I have always been annoyed by the size of the loaves of pre-sliced sandwich bread sold at grocery stores. I can never eat an entire loaf before it goes moldy and I don’t think forcing myself to eat way more bread is a good idea. I have discovered that I can break up the loaf into separate containers and freeze the excess but that is annoying. Why do grocery stores not sell half loaves or quarter loaves of bread? My theory is that the current size is based around a married couple with 2-3 kids that is feeding their kids multiple sandwiches a day, that is the only way I could see going through that much bread that fast, but surely single people and childfree couples are not an insignificant portion of the market. I first noticed this when I moved out of my parents house and was only buying food for myself, when I got married it got a little better but we still cannot eat a loaf of bread before it goes moldy. Does anyone have any insight as to why sandwich bread loaves are the size they are? Thanks.

Why does sandwich bread only come in such huge loaves?