Bitcoin allows a merchant to recognizing a transaction without considering fraud/KYC. I've sold items on a forum with an escrow moderator and paid 0% in fees. You just cant do that with paypal.
Good to hear you using Bitcoins for something other than dark markets, we should try to brainstorm other niches where Bitcoin has an edge. I think taxi drivers might warm to it, they definitely hate credit cards.
Let's say you accidentally type in the wrong BSB (which my father actually did once) and it happens to line up with an account number in that bank (fortunately for him it did not). Even if you send say, $150,000 to that person....it's not legal for that person to accept it. Nor spend it.
See, while they could claim to have spent a portion of it unknowingly the courts would probably view that as fair, they couldn't go "hey I'm rich!" and buy a house that they would be allowed to keep.
I mean, you might not get all the 150k back in the end, but they would definitely not be keeping any of it. And through this process, you'd generally find your bank would be fairly enthusiastic about getting that money back, since as long as it's not on their ledgers they can't lend against it.