YMYM has a diminished inflation rate because it has a fixed yearly issuance of 5 billion coins. This means that each year, the rate of inflation decreases comparative to the total supply, and in a very predictable way, making YMYM the perfect candidate to be used as a currency.
Since YMYM is not meant to be hoarded — and hoarding is a major barrier to a cryptocurrency being used as, well, an actual currency — YMYM will have a much more utilitarian and practical place in the economy than other cryptocurrencies, which often remain unspent.
