Only an idiot would think that 1
BTC is as low as it can be divided and bought/sold.
Do folks think 1$ is the smallest unit? Or 1 oz is
as small asthe smallest unit for gold
can be bought? No. All can be divided down to much smaller units.
They are just the base units. It's called using decimals...
You want smaller units, then just use mBTC or µBTC. For a perfect example see,
https://bitcoinity.org/markets/coinbase/USD