Early-rising New Zealander here (it's 5am folks!).
Bullet points for starters:
1. We are genuinely relaxed people, life is good, weather not too hot or too cold, food easy to get or grow, housing not horribly expensive, healthcare obtainable for all, education as close to free as we can make it and an overall low crime and corruption rate. So the majority of us go to sleep at night, overall, not worried about losing our livelihood one day to the next or not having enough to eat. Similar in this respect to the Northern Europeans.
2. Tall poppy syndrome. We don't like people standing out from the crowd in terms of personality, flamboyance, income - to fit in, you maintain a level of 'bloke/girl next door'. Even if you have tons of money or you are flamboyantly dressy. If not, cue media outcry and attacks, so you move overseas where you can disappear among the masses.
3. Geography! You have no idea how expensive it can be to live here. We work hard to export all our fine goods to you and work harder to import the things we love.
4. The knowledge economy We are messing up here. Internet is too expensive, kids are not getting properly schooled in computing skills and we don't place a high enough value on STEM. If the government really really focused on STEM the next 10 years our next gen kids could have incredible lives, where distance is no barrier thanks to internet access and quality of life is incredible (those mountains, sheep and rivers/lakes are totally as amazing as you see in the photos).