It's about choice and liberty
You could rant and rave that by rejecting my rations I obviously don't want to eat.
Just like statists do when I say I don't want government's schools, police, fire departments, roads, libraries, or whatever.
And, you'd be wrong.
The government food pellets may have all the vitamins, minerals, supplements, and fiber I need, and they may even be delicious, but that's not good enough for me. I prefer to use my money, in my own way, to purchase what I would prefer to eat. Even if it isn't as good for me.
Well, the same goes for all the things your government now "provides" with stolen money. I would rather keep my money (and leave your money in your pockets, as well) and make my own food decisions and mistakes. And I don't wish to pay twice- once for the government "service" I don't want, and once for the food I do want.
But for statists, such an assertion is like a declaration of war against all they hold dear.