No one decides morality. Morality is praxeologically discovered through the realization that it's impossible to consent to a violation of your own consent. Truth isn't subjective. No one has "their own truth" because there is only the truth. Any deviations from the truth are falsehoods by definition. By defining truth as subjective, you strip all meaning from the word.
RE: Statism or Anarchism: Which has the greater burden of proof?