Actually, they haven't been too bad this year - so far. Brisbane would easily be the redback capital (Sydney has to contend with funnel-webs, which are much scarier).
Our cooktop runs off 9kg gas cylinders which have to be removed for refilling every few months. I almost always find between one and three redbacks underneath the empty cylinder, so have to be sure they're killed before putting it in the car. Actually, that applies to any outdoor object that you handle.
They sometimes lurk under the lip of our wheeled garbage bins, so that's a once a week chance to get bitten. Bicycles are a big worry, because kids handle them. They get under the seat and behind the chain guard (if the bike has one). A kid working at my local bikeshop had to be taken to hospital after one hiding in a bike he was servicing got him, and I've lost count of the number we've killed on my kids' bikes.
It's more disturbing when they come inside. We've had a couple descend from open downlights. Our shower has an exhaust fan directly above it, and some have come through there as well. Just the other night when I was getting out of the shower, I saw this black thing abseiling down right where I had been standing seconds earlier. I had to go out, so my wife had to find it in the shower tray and kill it.
Years ago, we had a plague and had to have the house fumigated. There were hundreds of them on the outside walls and hanging around window frames, so of course quite a few started coming inside. We killed a couple in the same room as our baby, which was distressing.
You get used to living with dangerous wildlife in Australia. I live very close to a river, so you always have to watch for snakes when you're out walking. Unfortunately, most snakes are venomous and many are lethal - the common brown snake is about 150 times more deadly than the diamond backed rattlesnake (the inland taipan is 4 times more lethal again, but fortunately they rarely cross paths with humans - one bite injects enough venom to kill 125 men).
And then there's the paralysis ticks, etc. :lol: