Because as a society we found that a government is the (as of know) the best way to manage us. To fund this system we give power to government to levy taxes. O

Because as a society we found that a government is the (as of know) the best way to manage us. To fund this system we give power to government to levy taxes. One of those taxes is a tax on the value a business add to good and services, another is on the product of your labour, etc. Now, you are arguing on a different system where this tax is not to your liking. This is a political choice and up to you to vote and promote other sources of government revenue.