Rampant inflation or the idea that nobody would go to work are commonly held up as big reasons not to have a UBI (or something similar) so it's important to address those.
> Why should the tax payer pay for someone sitting on their behind?
There are a host of reasons, here's a few off my head:
- We accept there will always be people we will pay to sit on their behind (disabled, elderly, mentally ill, students going to university, veterans, retired government employees, etc.). It's important to recognize we already pay a huge number of people (about 5 million, or 20% of Australians according to one of my links above) to "sit on their behind"
- It gets them off the street and therefore not out committing crimes.
- Because you're happy doing what you're doing (going to work, I presume) and those people are happy doing what they're doing (nothing). So everyone is happy right now. If you force them to go to work you'll be unhappy because you'll spend all your time forcing them, and dealing with other massive societal problems like crime, and they'll be unhappy because you're making them go to work when they don't want to. So you would reduce happiness by forcing them to go to work. Also likely they'll do a terrible job at whatever work you force them to do, which is not good for society.
If you want to rebut that last point by saying "but I'm not happy (going to work)" then there is an extremely simple answer - Quit. Get the free money and do nothing all the time. Of course I already know you won't do that because it won't make you happy, and you don't want to live on $1k a month (it's good enough, but not great). Plenty of people actually do try it for a while (I did)... and then they come back to paid work again because overall for 95% of people (as proved by evidence) life is better.
Everyone is already doing what makes them happy, so leave it alone.
Remember, US tax payers are spending literally trillions of dollars on wars and bailing out banks (again)... would you rather the Australian government spend those tax dollars that way, or spend it on improving the lives of Australians who are in Australia?