Let's see. I could pay for hardcore online pornography in a pretty anonymous way. I could board a flight with a flash drive containing $1million dollars in BTC. I don't have any draconian restrictions on who I can and can't exchange my "money" with. If you send me BTC and the network confirms I never have to worry about your cheque "bouncing". I could donate to Wikileaks without a company like MasterCard or Visa deciding who I can and can't send my money to.
I can do all these things on my own without having some third party potentially fucking me over or charging me a monthly fee. I consider all these things great advantages.
It also doesn't mean I need to abandon credit cards or other forms of value transfer. But in those cases I now have an alternative I did not have had BTC not existed. It's a weird black and white kind of logic that HN has where it seems for Bitcoin to succeed it must replace everything currently in use. That's a false dichotomy. They can mutually coexist. Right tool for the job.