It's a soft form of bank capital controls. As we proceed into a cashless monetary system (similar to what Sweden is implementing), the availability of cash at banks will be less and less. Cash = Privacy, without cash every transaction you complete is recorded. Some people have no problem with this, personally I do have a problem with loosing financial privacy, especially people knowing about bullion purchases.
My bank now has a policy of $5,000 limit per day, unless you arrange it beforehand.
If you withdraw more than 10K cash, all banks will require AML/CTF forms to be completed (asking what the cash will be used for). And if you withdraw smaller amounts to avoid these forms, you could be guilty of the 'structuring' offense. When the bank tellers start asking questions such as "What's the money for", you can be 100% sure they're sending a report to AUSTRAC (http://www.austrac.gov.au/).
http://www.dailymail.co.uk/news/art...hless-churches-accepting-cards-offerings.html