What can you actually use Bitcoins for? I mean, what can you actually buy with them? I think I've read pizza and maybe tacos from some Mexican restaurant. Maybe a few other things. But by-in-large, they seem to be a useless "currency" because of the simple fact you can't really buy much of anything with them. Just a few scattered things here and there. If I were, say, selling my car and somebody asked if they could pay with Bitcoins my answer would be "no". And I'm pretty sure you'd get that same answer from 99% of the car sellers out there.

So, are people just speculating that Bitcoins may become useful for buying something you'd actually want sometime in the distant future?