It's a massive weekend for Auckland as the much-awaited CRL, the City Rail Link, finally opens to the public. And there is excitement. Five and a half billion dollars and 10 years of chaos have come to this. The question will be asked: was it all worth it?

Firstly, I have to say it never needed to be so expensive because it never needed to be this late. The idea of a rail link between Auckland and Morningside was first mooted in 1912 and again in 1918. There was even a plan drawn up in 1923. Robbie, Dove-Myer Robinson, talked about it in the 1970s. But it wasn't until 2003 that we finally pulled our finger out and started doing something about it.

Imagine if we'd built it in the 1920s. Imagine if we'd built it in the 1930s, when Australia was building underground rail and the Harbour Bridge. But no, we were afraid of it. We hesitated. If only we'd had the courage of our convictions back then, when it was cheaper and easier.

And it's not like we've always been this timid and overly cautious. Construction of the Central Motorway Junction, affectionately known as Spaghetti Junction, began in the 1960s. If you think the disruption caused by the CRL was significant, consider what happened then. To build Spaghetti Junction for the car, they effectively eradicated an entire inner-city suburb. Yet these days we lose our heads over a couple of inner-city streets, a few barber shops and some traffic cones.

My own memories of the debate are full of toxic misinformation and, can I say, that came from all the radio stations and plenty of politicians. People were calling it a loop. It's never been a loop. It's a link. It's a through-link.

People would say, "Well, it's a loop. What about the Simpsons monorail? What about the Sydney monorail?" But it was never anything like that. It was a link. It joined two previously disconnected parts of a railway network we'd already invested in.

Those myths made much of the conversation unnecessarily fraught. But there we go. It's happened. It's done. Thank God for that.

Now that it's finished, people will be demanding a revolution. It won't be a revolution. It will be an evolution. But it is the single biggest step we had to take to allow our biggest city to grow even bigger. It's what we needed to do to show we're not afraid of growth. That we're not the timid New Zealanders Christopher Luxon has so often accused us of being, and that our businesses are not afraid of growth either.

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