I emigrated to NZ when I was 46 and it is a huge move. We had visited many times before we emigrated and bought land, commissioned an architect and built a house whilst still in UK. We had a house to move to but it was still a difficult move.
NZ is a bloody long way from anywhere, we live in Hawke's Bay, around 6 hours drive from Auckland and then 26 hour flights from Auckland to Europe. I have been travelling back to UK three times a year from 2003 until 2023 when my Mum died. It is a long trip and pretty expensive.
We love NZ, have fabulous friends here and a terrific social life, but you have to make an effort to be involved. Food, housing and power are very expensive. I miss M & S, Supermarkets, the history and the easy travel to Europe. But NZ is my home, we have been welcomed here and will stay here.
We have gang problems, drug issues and our suicide rates are shocking but it is a good place to live if you are prepared to adapt, fit in and make an effort to meet new people.
I love the UK, am Lancashire through and through but I love NZ too - very different countries and if you come with a good attitude, NZ will love you too. We are very fortunate.
After that long ramble OP you need to visit do your research and make an informed decision - good luck whatever you decide.