85 Billion does sound like a lot at first take. If you think about it in large scale though, it really isn't very much. By the time Bitcoin is fully mined in the 2040s, the global population is estimated to reach over 9 billion people. That's roughly 0.0023 Bitcoin per person. 85 billion would only be 9.44 XUN per person. As transaction fees increase due to the decline of active mining, Bitcoin will eventually be an unsustainable currency for smaller transactions, and will be more targeted for large financial transactions. Something like XUN, with the larger supply, would make it easier for the average person to utilize cryptocurrency.