I'm not bothered so much. In fact, I support raising the GST generally but only if concessions are made elsewhere. Here's my reasoning:
GST is a consumption tax. It doesn't apply to basic foods (such as fresh fruit and vegetables, bread, meat and most dairy), some medical products and services, supply of water etc... In other words, those essential items are mostly GST-free. On the other hand, all the other stuff that I choose to buy is taxed.
Everyone knows that the money for all the services and infrastructure has got to come from somewhere but I hear so many people in this country bitch and moan about paying extra taxes but are more than happy to be consumers of the system. Last financial year I paid over $30,000 in tax (and that's not including tax paid on GST items, fuel taxes etc...), yet I never use the Medicare system, I don't receive any benefits and I don't have children (although I seem to be paying for other people's kids to go to childcare). I'd be more than happy to pay every time I needed to see a doctor if it meant I was saving almost $1500/yr for a Medicare system I didn't use.
... but that's just me and I realise that my situation doesn't work for everyone.
So I had two ideas:
1. Everyone pays more in GST (i.e.: on products they choose to buy and therefore have greater control on how much tax they pay as individuals) but reduce taxes elsewhere where consumers have little to no control (Medicare, fuel, income tax...). I'd also support raising taxes on totally non-essential items such as alcohol and cigarettes. Essentially "flatten" the entire tax system so it's less complex.
or
2. Develop a system where tax payers can "opt out" of certain taxes, but contribute more or "opt in" to others. For example, I might opt out of paying the Medicare levy which meant I would no longer be entitled to Medicare and would have to pay my own doctors bill. Obviously the admin involved in implementing this sort of system is tricky, which is where raising the GST works better.
Above all, I'd like a greater say in where my hard-earned tax dollars go.