Bitcoin is a ultra private mode of payment, without any financial institutes interference or government red tape.
The reason why i love bitcoin is bitcoins could appreciate in value before you spend them.
it's less expensive to secure bitcoins than precious metals (note: when you hold bitcoins, you hold the actual thing of value, not some balance in a fractionally backed account)
you can transfer wealth worldwide instantaneously, without transaction fees, irreversibly, with no intermediary and anonymously (it's the digital equivalent of giving someone something of value in person)
like precious metals, there is a fixed quantity and no one has the ability or authority create new bitcoins (note: you can "mine" bitcoins, but there is a limit on the total number of bitcoins...and it's not cheap to mine bitcoins)there is no central authority that controls bitcoins.
many of the same things that give gold value, give bitcoins value. It's even conceivable that bitcoins could become more valuable than gold due to the utility derived from being a digital, rather than physical, medium