I've lived in Country NSW ( a few different towns) for 25 years, Sydney for a short period of time (6months), Perth for 2 years and Adelaide for 14 years.
Everywhere was completely different.
NSW country over friendly very little problem with crime (this was 15 years ago they have now mostly thanks to ice)
Sydney sucked mostly due to traffic. Was playing some rugby and working there to see if I could make it in the big smoke (that's what is country people called Sydney. I didn't make it above a certain level in Rugby and got home sick. Very multicultural, unfortunately including some that don't try to mix and segregate themselves.
Perth (2001-2002) was overly friendly, very relaxed, clean, well organised city. No Sunday trading which is unique as far as a city goes in Aus. (May have changed now) A lot of people in Perth are from other states in Australia or other countries (had a large mining industry back then). As a result few had family so made friends very easily. Lived with 5km of 3 different beaches. Was really great.
Adelaide gets a bad wrap in Australia. We are seen as backward. Great city, no traffic jams, mostly good weather, good beaches (limited waves in the city areas), affordable housing. Adelaide is good to choose your own lifestyle. Cafes, beaches, hiking, wineries, sport, some of the best festivals. It has the feel of country town but with the city amenities.
The point is everywhere is completely different. Some places you'll love, others you'll hate more than Pacifikan hates anything Australian.
I'm 40 & still haven't been killed by a spider, snake, shark, red kangaroo or drop bear yet. (Although I did get bitten by a white tail spider on the leg once, was not pretty, but I'm still alive)