Disclaimer: I'm familiar with the French-speaking part, not the German one.
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Work: you can't live there long-term without a working contract, which comes with a residency permit if the employer goes the extra mile of justifying why they are hiring foreigners and certifying they can't find a Swiss candidate. Many foreigners work in Switzerland, but some employers won't bother with the extra paperwork (may not apply to every type of job but applies to me)
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Admin: Switzerland is a highly organised, highly functional country. When you are in, it's freaking good (I don't know Germany). The level of services, from public infrastructure to social support is excellent most everywhere.
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It's safe. May be "boring" but frak it, not having to worry about crime most everywhere is just cool.
It can be funny when you are in what Swiss people consider a "ghetto" or a "high crime area", you'll be like wtf, it's just some kids smoking weed is all. Our daughters going out at night in Geneva didn't have a curfew or any limitations.
- People. People may not be the warmest in big cities but privacy is highly respected - people won't bother you... as long as you follow the rules. Making friends may take time, but as everywhere else, insert yourself in like-minded communities and you'll meet excellent people.
And disclaimer again, I live in France right next to Geneva, I work there from time to time, I have friends there but I never lived in Switzerland.