shrekfan246 said:
Your first problem might be being Australian, where the average wage is high enough that people in the service industry can actually get by on just their normal pay.
In the US, people who are in "tipping" jobs can get paid as low as $2.50 an hour, though their employers are supposed to be legally required to ensure they get the federal minimum of $7.25 an hour if their tips don't cover it.
As low as $2.13 in my case. Speaking as someone who just became a waiter, it fucking sucks, and you have no chance of survival if people aren't tipping well.
I feel a bit torn on this subject because I simultaneously despise my customers for having to rely on them, and hope they tip me well. It wouldn't be so bad if the manager wasn't there, taking his cut.
All of this in mind though, I still don't believe in tipping if the service isn't good. But no matter what, just be polite and don't be unreasonable.