For my money, the real holiday which should fall on a fixed day of the week (a la Thanksgiving) is Halloween. Make it the final Friday of October so that kids can stay out late and then teachers don't suffer the next day!
All that plus Superman has been made too perfect over time. Batman has his psychological problems, but they're not pleasant. And then Thor contrasts them by being a good-looking goofball because he's a fish out of water in the modern world.
It wouldn't help. First off, being forced into a job for a little while wouldn't create the immersion into the lifestyle of the people who aren't just in it temporarily. The most important things that could be learned from seeing how the other half really lives aren't necessarily stuff you'd get from working some shifts at the same place they work. It would be exactly like how being a tourist is nothing like being a local. If you've vacationed somewhere, yeah, you might know a wee bit more about that place than someone who's never been there. But it's nothing like the experience of having lived there full-time long-term as a real local.
Secondly, just having "been there" for a brief while isn't what makes a real difference in people's behavior and treatment of others. You don't treat waitresses nicer because you know what it's like to wait tables. You don't treat store cashiers nicer because you've run a register. You treat waitresses and cashiers nice because you are a decent human being who has empathy and common courtesy and respect for other human beings. Treating others well isn't shaped by having done their jobs or been around people like them for a few hours a day for a few months. It's about the bigger picture. If the basic "We're all people. These are humans that I'm interacting with. We should be good to them." is not instilled well enough in someone for whether they've personally done their job for a little while or not to matter, doing that job for a little while isn't going to amount to much at all.
Standing on their chairs is a bit far, and a liability to the restaurant, but otherwise, just as long as they are not taking a picture of my food, let them.
The language has evolved. The singular they filled a hole in the language that needed to be filled. I think the only people who are still against using it are likely the ones who don't like it when language evolves. They want it to stay the way their teachers taught them, likely out of a textbook that predated the change. Unfortunately for them, evolution is a constant process. Language is defined by the people who use it, not by the teachers and textbook writers.
Being forced to have sex with anyone is wrong wrong wrong. That's rape, not sex. Doesn't matter what gender or if they are married or in a relationship.
No would should be pressured into doing sexy things they are not comfortable with. What if the positions were reversed, and the husband was divorcing the wife because she didn't want to do that stuff? You would rightly think he was a scumbag. It is no different.
Secondly, just having "been there" for a brief while isn't what makes a real difference in people's behavior and treatment of others. You don't treat waitresses nicer because you know what it's like to wait tables. You don't treat store cashiers nicer because you've run a register. You treat waitresses and cashiers nice because you are a decent human being who has empathy and common courtesy and respect for other human beings. Treating others well isn't shaped by having done their jobs or been around people like them for a few hours a day for a few months. It's about the bigger picture. If the basic "We're all people. These are humans that I'm interacting with. We should be good to them." is not instilled well enough in someone for whether they've personally done their job for a little while or not to matter, doing that job for a little while isn't going to amount to much at all.
Sheesh - its like half of huMANity is missing...