Best way to get 60k (after tax) income forever?

[fungus pudding]

60k for 2 people? That would worry me

Me too, but 60k, provided it's invested somewhere to provide regular increases for inflation, wouldn't be too bad if it's in addition to universal superannuation.
Of course if you're nearing meeting up with the grim reaper, you can nibble away at the capital. They used to say you should plan it so your last cheque bounces, but now that there's no cheques - you'd need to have your last AP declined .........