Hey, ozziegirly, I'm a lawyer in Adelaide as well! My hours are the same as yours, but I work 4 days a week since my daughter is only 14 months.
The problem with living in Adelaide is that people forget it exists, she said, looking pointedly at the OP.
Um, but, I adore Adelaide. It's smaller and cheaper than Sydney, the crime rate is much lower, but we have:
Great festivals - Adelaide Fringe is second only to Edinburgh in calibre and size. Womadelaide is the offshoot of Womad. Etc.
Great food and wine. I live a 30 minute commute from the centre of the city, and a 15 minute walk from a world-reputed winery and cellar door. Several other wineries within a 10 minute drive. I can buy cherries for $5 a kilo - so about a pound for a pound. My fruit bowl has lychees and mangos and bananas in it, all domestically grown. The seafood is astounding, and has lower levels of mercury and various nasties than bigger, more populated countries. Our beef is free-range and organic. Etc.
Downsides. Paid maternity leave is only just coming into force as of next year, and home birth is in the process of being made illegal (don't get me started). It can, indeed, be bloody hot. Adelaide's closest city (Melbourne) is an 8 hour drive or an hour's flight, so you have to really want to go there. And as others have said, going overseas is a huge hassle.
Can't think of much. Nowhere's perfect, but I feel like this is pretty close.