Bitcoin are (effectively) infinitely divisible. Money supply creation on it's surface is meant to replace notes that age out of supply. Inflationary growth is a byproduct (albeit a good one). Bitcoin supply will also age out (as people lose access to private keys). This creates a natural inflationary action that pushes the value up. No new coins need to be created, just take what's in the supply and break it up into smaller values. This also removes the politics out of the money supply.
Many users are already using mBTC as a base unit (0.001BTC) as it's much easier to transact with at a human level. 1mBTC currently is ~ $6.50. The current smallest unit (1 Satoshi) is worth 0.0001USD, plenty of room for further unit division. It's been confirmed on a technical level that moving that division deeper is possible, but unnecessary in the short term.
Many users are already using mBTC as a base unit (0.001BTC) as it's much easier to transact with at a human level. 1mBTC currently is ~ $6.50. The current smallest unit (1 Satoshi) is worth 0.0001USD, plenty of room for further unit division. It's been confirmed on a technical level that moving that division deeper is possible, but unnecessary in the short term.