No I really think it is a cultural difference. I've only been here 3 weeks in Auz but I already feel much more secure in terms of theft. Compare that to Tijuana where you could have your wallet ripped out of your pants at any given moment. In Vancouver I wouldn't leave a laptop out of your view for any length of time...it will be gone in a heartbeat. Property crime is terrible in Vancouver. At the same time, I've heard in Japan there is practically no theft at all. You can leave your wallet on a bench and no one will touch it. I've also heard they really don't have much vandalism either...or perhaps its just the areas where my friends were. Honestly, I've toured through the campus & library at a University in Sydney and would feel comfortable walking away from a laptop to get a coffee, no problem. If someone hasn't been here & lives in North America I'm sure that would be hard to understand.
Ha! I personally find it hard to leave my macbook at a table at a cafe and get a drink, if its not in plain sight if I turn around