So this happened: Ed Lee told homeless people on the Embarcadero that they will “have to leave the street” before the weeklong waterfront-spanning Super Bowl carnival of cross-promotional opportunities that will precede the 2016 game.

“OK,” said the homeless people, “we’ll go to our second homes in Tahoe.”

So many questions! The first, I would think, is “Why is Ed Lee pimping for the NFL?” The NFL is a gigantic corporate entity, zealously guarding its brand while doing everything possible to degrade it. The league came very late to the notion that beating up women was a bad idea, and is now in an utterly dumb and maddening fight with one of its star quarterbacks over deflated footballs.

It’s just like when Lee tried to pimp for the Olympics, a known money loser that leaves behind a lot of infrastructure and no money to pay for its upkeep. Residents of the Bay Area were all “Can we think about this?” while Lee was going, “It’ll be great!” Lee lost that fight, so he transferred his allegiance to another rapacious entertainment cartel.

So the idea was: Get out, you filthy people, because we need a postcard-ready city for media executives to stroll around in.

Then there’s the larger pesky problem of what to do about the homeless. Many words have been expended recently on the deepening problem of San Francisco residents forced to encounter urination and defecation in public places. I hold no brief for those activities, although I do point out that they are a predictable consequence of being alive.

It should be mentioned that a fair number of the urinators and defecators are, to use the clinical term, crazy. We don’t believe in mental hospitals anymore (because they are too costly, unlike homelessness, which is, wait, even more costly), so the crazy people walk among us and, guess what, act like crazy people.

And there’s no street-level policy that can deal with that. Either kill ’em or move ’em out or deal with ’em. San Francisco has made a morally courageous decision to deal with the problem. That decision has to be made again and again, because the problem is intractable.

That decision comes with consequences, one of the least of which is bad smells and disgusting sights. Caring enough about human misery to risk discomfort is a virtue; caring together is a civic virtue.

A large subset of the crazy people are also addicts of various kinds. They’ve been offered the programs; they didn’t want them. Or they couldn’t stay with them. Or whatever. Addiction kills people by convincing them they don’t need help.

Most homeless people are not crazy addicts. They would experience great shame and humiliation if they were forced to do their business in the streets. Like any experienced urban resident, they have a very good idea where the publicly available bathrooms are. If that alternative were somehow not feasible, they would do their best to go deep into the most secret corners of the landscape.

Homeless people are not animals; they are very poor people, is all. Poverty is not an infectious disease; you can’t get it even by brushing past a homeless person on your way to the Nike Gatorade Punt Like an All-Star Celebrity Game.

Homeless people are sort of like me and you. They have mothers and fathers. They’ve known love and heartbreak. Maybe they never had a chance; maybe they had a chance and then stuff went wrong.

How far are you away from homelessness? How many multiple bad things have to go wrong before you run out of your last couch to surf on? Suppose financial reversals plus death of a partner plus debilitating costly disease — how’s your cushion? Maybe all that would be so depressing you’d seek escape in a bottle. And then you’re at a bus station and you’ve got $2.30 in your pocket. And, hey, how about a civil war? You a refugee yet?

It could happen. It could even happen to Ed Lee. Everything is mutable; status comes and goes. We’re all human. Which is sort of the point. We treat other people the way we would want to be treated ourselves. I think that’s some kind of Rule.

So maybe there’s something better than urine-shaming as a social philosophy. Maybe there’s trying to be useful. The problem will be with us as long as there are people, so the only approach that makes some kind of sense involves finding your place in the social fabric. There are dozens of useful volunteer groups; find one.

You may find homeless people offensive. It may also be that some of them find you offensive, you resource-hogging, water-swilling, ocean-warming, sweatshop-clothes-wearing, vacation-in-Bali-taking human placeholder. It’s all a matter of perspective.

“And the moral of that is — ‘Take care of the sense, and the sounds will take care of themselves.’” “How fond she is of finding morals” in jcarroll@sfchronicle.com.