Ever stopped to ask, "Why?"
Oh man you are in climbers heaven. Are there many places like this in NZ?
Clip'n'climb places (where belaying is on an automatic machine, so there's no need for a second person standing below and people can go climb alone, if they want to) are, as far as I know, in Invercargill, Wanaka, Christchurch and Auckland. Maybe there are more, but I only know those four.