Why not have 1 btc as 0.00000001current btcs?
less than one year ago it cost 10,000 bitcoins to order pizza. assuming that was a $40 order that meant 1 btc = $0.004 at the time.
it is easy at this point to wish for a smaller value per bitcoin but that value might never have gotten here if 1 btc = $0.0000004 at the time.
when the decimals gets to be a problem we can start using mbtc units. for example, today 1 mbtc = 0.5 cents each
(or $0.005, assuming a btc equals about $5)
even if btc was 0.00000001 current btcs, a 10k btc would be.. 10^12 or 1trillion btc.
numbers & currencies are easier to talk about in large numbers than small ones like 0.xxxxxx.
people arnt really used to talking about milli/micro/nano, especially when dealing with money..