The biggest weak spot I can see, is an image and trust issue. Also the fact that we are being asked to trust a black box that does math that most people don't understand feels like a big leap of faith. Telling me bitcoin is good because other mediums have problems too, just isn't convincing to me. It just shows that people do scammy things with any currency. It feels like a logical fallacy I'm to dumb to name.
Lets try it this way. If/when you rule the world, what steps, if any, would you take to promote the mass adoption of bitcoin as an equal currency to the US dollar? Be as imaginative as you want. Anything goes here. You are king of the world, you know things will be better for everyone if bitcoin, not shit coins, are the one and only crypto currency available and you want everyone to use it as freely and interchangeably as the US dollar. What has to happen? More consumer protections? Nothing? Just thought experiment. I'm really not trying to be adversarial or have a gotcha moment. I'm trying to covey some real intellectual curiosity here.