For poor people this is a valid question. They could give you ten good reasons why being in business is wrong.
Rich people have one good reason for doing anything.
All the profits of your hard work can by yours. The ATO will not share your losses but it will allow you to create Wealth and Employment from your Gross Profits instead of paying taxes like working class employees. A successful Business should be able to provide you with an income on retirement rather than become a burden on the Government and the Tax Payers of the future. In the extreame, a Business can plan for a future possible marrage breakdown which usually ends in both Spouse becoming worse off - and the Children a big problem.