I think this question sounds rather like, why doesnt the uk get rid of its monarch and get a real president? The answer in the UK case is that it suits everyone to leave matters as they are. If you start tinkering wth institutions of government then people start asking questions about just exactly why are all the other bits as they are, and are they justified too. If you have a president, then that president has to have a real job. He represents the whole country, he must do something. The Queen has a lot of power in the UK but never uses any of it. The prime minister exercises her powers. Is this the case in Australia too? At the very least, presumably the president would be free to choose to help whichever side in the current hung parliament he happened to come from politically. Because in any elected presidential system he certainly would come from one or other main party and would have stood on a party ticket.
Midlife, most countries seem to like to have at least two power centres in their government which represent different things, or used to. In the US the president is the most powerful individual, though technically probably no more powerful than queen elizabeth. just, he gets to exercise his powers himself. But he does have to bow down to congress, and whoever it chooses as its spokesman, to some degree. In Britain, the chosen spokesman of the legislature becomes the prime minister. The Queen agrees to do as she's told for fear of being chucked out by parliament. I would love to see her take on parliament sometime, but hey, its a cushy job having a palace and not having to do the ruling, so why make waves?
The prime minister loves the system, because he can pretend there are real checks and balances which make him accountable to the electorate, when really, there arent. If there was an independantly elected president then not only would he be more likely to use his powers and interfere with the prime ministers freedom to do what he wants, but the prime minister couldnt claim any democratic superiority automatically putting him in the right however stupid his proposals.
Midlife, most countries seem to like to have at least two power centres in their government which represent different things, or used to. In the US the president is the most powerful individual, though technically probably no more powerful than queen elizabeth. just, he gets to exercise his powers himself. But he does have to bow down to congress, and whoever it chooses as its spokesman, to some degree. In Britain, the chosen spokesman of the legislature becomes the prime minister. The Queen agrees to do as she's told for fear of being chucked out by parliament. I would love to see her take on parliament sometime, but hey, its a cushy job having a palace and not having to do the ruling, so why make waves?
The prime minister loves the system, because he can pretend there are real checks and balances which make him accountable to the electorate, when really, there arent. If there was an independantly elected president then not only would he be more likely to use his powers and interfere with the prime ministers freedom to do what he wants, but the prime minister couldnt claim any democratic superiority automatically putting him in the right however stupid his proposals.