We are in Auckland and have been here for about 11 years (could be 12 have lost count!) It depends on where you live and what you make of it. I think it is less materialistic but my boys (9 and 14) are still into playstation, ipods and computer games. They don't however have mobile phones, they both play sport and we do alot of walking, paddleboarding, things as a family. Activities IMO are more accessible and cheaper than in the UK. NB I wouldn't say we are a true 'outdoorsy' family. Some pockets of Auckland are very arty, hippyish and some are very 'sloany'. There's something for all. North, South, East and West Auckland are very distinct.
The weather is definitely better than the UK especially around Auckland where you can pretty much guarantee 4-5 months of sun (mid 20s), change of seasons and sometimes a frost in winter (it does rain alot). The south island has colder winters but still warm in summer.
The cost of living is high and to get on the housing market is difficult but if you are on a good salary and arrive with a deposit it is all manageable. We spend our money differently to friends and family in the UK. We rarely eat out, buy take aways etc... we prepare meals from scratch, have friends over for BBQs etc,... Less materialistic expenditure and more lifestyle (we have friends who inherited their parents furniture 30 years ago and still have it! A bit extreme but they spend their money on other things.
The move has been good for us. It is however a long way and there are downsides.It doesn't suit everybody here. If you come it will be what you make of it.
I say to everybody that asks, give it a go, what have you got to lose. What's thought to be the worst thing - you come hate it and go back. Not the end of the world. What's the best thing, you come love it and never look back. What's worse imo you don't do anything and spend the rest of your life thinking what if...
Long winded but putting off mowing the lawns haha 