While it's cool to have people think Australia is crawling with poisonous monsters and that Australians are therefore awesome for dealing with this shit on a daily basis, the reality is that it's not very dangerous at all.

If you're adventuring in the bush and swim in strange creeks or jump in the ocean wearing a meat suit, yeah it's probably dangerous. But for your average Redditor... no.

Fun facts...

Sharks
More people are attacked by sharks in the US than Australia or anywhere else (but that's probably due to large population). There's been just over a hundred recorded deaths due to shark attacks in Australia. (source)

Crocodiles
I think the average fatalities from crocodile attacks in Australia is 1 or 2 per year. If anyone has a good source for stats, please provide.

Funnel web
An antivenom was introduced in 1980 and since then no definite funnel web connected deaths have been recorded. Also, time spent by bite victims in hospital has been greatly reduced. Prior to this, however, 13 known fatalities associated with bites from this spider were recorded. (source)

Red-back spiders

An antivenom was introduced in 1955 and no deaths attributed to treated redback spider bites have been reported since. Prior to this, at least 14 fatalities had occurred. (source)