Both are very good to use. But not everyone knows how Bitcoin works and that is the problem. I hope there will be more people that is going to use Bitcoin.
But they must know that it is good to use it and also very safe. It will be nice in the future. Because the world is getting more digital.
Yes you are right, not many people know about bitcoins. And if i must pick one from both bitcoin vs dollar. I rather chose bitcoins than dollar, because it's easy to use and the price is high.
Indeed its easy to use but the fact is that, its too small to take over the dollar anytime soon, maybe if the bitcoin is globally known and used its possible.
Its maybe also just a matter of time but its not to predict this is gonna happen, I love the bitcoin because its much easier and controllable by yourself.