I was hungry this morning. The cost of providing me breakfast should have been shared by the community.
Sure, why not? Food is cheap and plentiful. We can afford, as a community, to provide food to anyone who wants it.
In the first place, you're reversing burden-of-proof. You're the one who posted the claim that something being neither an indulgence nor an offence but a misfortune is a reason its cost should be shared by the community. Show your work.
In the second place, you appear to be watering down the claim. "Anyone who wants it" is likely to be a much smaller class of recipients than your earlier characterization of the recipient class -- "hungry people" -- especially if the quality of the provided breakfasts is set at a level that discourages use by those with the means to fend for themselves. Your meme was an argument for the NHS -- for making all healthcare free and all doctors government employees -- not an argument for getting free care to a small fraction of the population.
As for positive reasons for "why not?", well, there's the obvious: because the taxpayers don't want to. There's an awful lot of stuff we can afford as a community to provide to anyone who wants it. Skydiving lessons, for instance. If we provided everything we can afford to anyone who wants it we'd find the burden excessive and we'd have to skimp on government expenditures we care about more. What makes free food for people who can afford their own food any different from free skydiving lessons in the unnecessary nice-to-have list?
And then there's an equally obvious (to some of us) reason: if it ain't broke don't fix it. Food is, as you say, "cheap and plentiful". Why would you want to mess with the mechanism that made that happen? People generally paying for their own food is the foundation of the whole massive tower of incentives built on top of other incentives that caused the motivations to develop in countless people's minds that caused them to take the myriad coordinated actions that caused food to become cheap and plentiful. If you get people in the habit of thinking food is something they expect the government to provide for free, the whole incentive structure will change, so why would you expect food to remain cheap and plentiful?
Most communities already do this, although in the US it is typically managed by neglect, and ends up as a quasi-religious thing; You could almost certainly get breakfast free of charge in your home town, with the wider community picking up the tab, as long as you are prepared to sit through a sermon, or otherwise have your ear bent about God.
Indeed so. If you don't incentivize non-reliance by price, then either you need to incentivize non-reliance by some other mechanism, or else you get over-use not driven by genuine need, and then the product ceases to be plentiful. Making the breakfasters sit through a sermon strikes me as an effective way to incentivize non-reliance. A comparable governmental and therefore nonreligious free breakfast program could probably achieve much the same effect by only serving pea soup. But "If it's neither an indulgence nor an offence, but a misfortune then the cost will be shared by the community." does not appear to contain a mechanism to incentivize non-reliance.
As some wag put it, "People respond to incentives. That is the whole of economics -- the rest is commentary."
You can even stay in an expensive hotel where breakfast is included, and the guests who prefer a light breakfast or no breakfast at all are communally subsidising that guy who wants to push the boundaries of "all you can eat".
That does not appear to be the case. It's an expensive hotel. The owners are still making a profit on that guy who wants to push the boundaries of "all you can eat". They're calculating that the reduction in profit from that guy overeating is made up in saving the cost of hiring somebody to operate a cash register. For that guy to be getting a subsidy, the hotel would have to be losing money on him.
Sharing food may or may not be "communism", but if it is, then communism is observably a practically universal human trait.
Sharing food is not communism. Sharing food is a complicated system of kin selection and reciprocal altruism, loaded with neural switches to turn it on and off, that was naturally selected for in chimpanzees under the pressures of our idiosyncratic environment. Communism is expecting it to continue to work when you torpedo all the distinctive chimpanzee psychology underlying it and just order the chimps to become Soviet Men and turn it on all the time because from each according to his ability, to each according to his need.