You're living in Mexico City and you're scared of Sydney!?? Good grief! Get over it!
Sydney is a great place to live - although it can be expensive. You need to decide what's important to you.
You didn't say what was the awful thing said about Sydney. Let me give you the worst: - politics and politicians! If we could get rid of them - well - things would improve greatly!
Auckland - nice little town. Been there a few times - wouldn't chose to live there - and it's full of Kiwis.
Which university was your husband looking at?
Sydney is quite multicultural
ps - I'm the A2K resident Sydney-sider!