Because your money is no one else's business. getmonero.org
Is it though?? Every transaction is recorded on a ledger that everyone can access. Cash and percious metals don't have this issue.
Show me a monero tx. with sender, receiver and amount values visible.
im new to monero, do you mean monero can also show tx sender and receiver like btc? > getmonero.org
Unfortunately they are being tracked by other methods. You can't sell 10kg of gold without special firms, banks, unless you do "black" trading. So, Monero is much better usually