Some people don't get the idea that trade differential is a valid investment strategy. It drives me nuts. Bitcoin is a form of currency, i.e. a unit of exchange. If you use your brain, instead of "pure" idealism, you will always make the best exchange you can at any given moment.

Bitcoin is not going to replace the dollar. A cryptocurrency might in the future, but I doubt it. It does, and likely will continue to, work as a secondary currency and as a store of value to some extent. Not as good as gold for that, but better than most anything else right now. It's advantage over gold is that it can be transferred nearly instantly.

There's nothing wrong with your math or your thought process on this.

edited for fucked up quote tags