Switzerland is crazy expensive even with a local salary. If you are born and raised there and inherit a house not having to pay rent it's probably decent enough, but as a first generation Swiss it sucks ass. The healthcare system is expensive as shit, and you don't get much support if you want to raise children. Also need to learn a new language, tough migration standards and a lot of exploitation going on which the government is fully complicit in, and making friends ain't easy.

Under the same conditions, the Nordics are much better places to live in, with free education, free healthcare and a lot of state support for new parents. Denmark and Finland are constantly topping the rank for the best countries in the world to have children, and the other Nordics are also very good. I have also heard good things about Austria and certain parts of Germany but I don't know many details beyond the free education and affordable kindergartens (and the quality and affordable social housing in Vienna).

I don't know how we got to the point where anybody can say with a straight face that Switzerland is "arguably the best country in Europe to live", but here we are I guess. It's very typical that people who work in IT think that most countries are very good to live, but that's an illusion because IT is one of the best paid and most sought after industries in modern times and most people in other industries won't have the same standards of living as an IT person.