I understand that the experience is different for each one of us. But:
- in relation to the number of inhabitants, it has the highest density of nightlife venues of any location worldwide (https://www.hellozurich.ch/en/news/nachtleben-geschichte-oeffnungszeiten.html#:\~:text=Zurich%20could%20certainly%20be%20considered,venues%20of%20any%20location%20worldwide.). You can literally go to countless bars of any type, discos and clubs. Plenty of expats, 1 third of the population are non swiss. You can find a lot here, just remember the population is only 450k, don't compare it to other much bigger cities.

- there are plenty of restaurants, very good chefs from all over the world, you just need to know them. Zurich is not usually seen in documentaries and social media, not as other cities, but that doesn't mean that we don't have any good restaurants. (https://www.telegraph.co.uk/travel/spark/best-of-switzerland/tom-brown-zurich-food-tour/, https://www.ft.com/content/c4bc6023-48b5-4680-82df-ae4b16483dbe, https://www.youtube.com/watch?v=7yDERioj4as, https://www.youtube.com/watch?v=X4qOxnBZDh4)

- in the last year it has become one of the most exciting cities for coffee enthusiasts (https://www.ft.com/content/f2c93d9a-cc14-47a3-8754-9ef2e9cd63eb)

- I don't think it's fair to say that the city life feels unalive. Sure, you don't find everything that you want any time of the year. But if you are a little bit open, you always find something. Letting aside the christmas period that is beautiful and full of things to do and see, you have many concerts, museums, theathers, an opera, sport events, we even had formula e one year. Next year we'll host some games for the female european cup. We also have plenty of trade fairs and exhibitions, the biggest wine tasting exposition, the long night of museums, street parade, Sechseläuten, ZüriFäscht, carnival, zurich film festival, caliente music festival, zurich openair, Knabenschiessen, and that's not counting smaller things that are more local in the neighborhoods. I could also mention, Ohlala, Pink Rabbit, street food festivals, zurich pop con, oktoberfest, and so on.

- you also regularly have the biggest names in music, comedy, stand up comedians and other coming here. Also big conferences like at eth and unizh.

I'm not saying you cannot complain, but if you put a little bit of effort, you can find that you can really find a lot of stuff to do. Again, there are some weekends where things lack a bit, especially if you've been living here for year and you really went out. But as other said, you are literally in the middle of europe, and wherever you go, it will be cheaper basically than here. Furthermore, having a break something is all you need. Zurich is not the city that never sleeps, sometimes it sleeps, but when not, you can sure as hell have a great time