Yes, if you consider a 4 person family it starts to get pricey. Basically, for a lot of my friends it meant that one of the parents would be a stay-at-home parent.
On the other hand, if you are single - there is probably not a better place in Europe, even in the world to work as a Developer, save a substantial part of your salary and have good work life balance in the same time: https://www.quora.com/Is-130K-CHF-total-annual-gross-a-good-...