Whatever is used as a symbol - I hope people stop suggesting we borrow/steal the Thai Baht symbol ฿ .
It's a terrible idea and I don't understand why people think it even began to have wings. Leave the poor Baht alone!
It's only a terrible idea if you are against the quick adoption of Bitcoin through existing infrastructure. Or proud Thai of course

CAD and AUD use $ as well, and I haven't heard of US protests over this. BTW, it already has wings, lots of people use it.
I'm not against a new symbol at some point, but don't think it's a problem to reuse a fairly obscure one, I'm sure most people are able to make the difference from context where necessary.