Faucets by that time will close down or at maybe have much lesser rewards. 1 satoshi is 1 dollar, theoretically in this thread, and you only earn 0.1 cents per every claim in faucet sites. So that will be 0.001 satoshis for every claim if they lower it. Since there's no unit lower than one satoshi, the user can only pay out after the user have made 1 satoshi which is after 1000 claims.
Even after the price of bitcoin has increased a lot, faucets will still be a waste of time. To be honest, I'm wondering what on earth does faucet users do in life? Is their whole day or their life has very little value that they would accept working for hours just to get centavos.
It's true. Wouldn't be possible to add more decimal houses to Bitcoin instead of the currently 8?
I'm interested in knowing the real implications of this question, people keep saying "oh, we'd just use more decimal places" but it doesn't look that simple to me.
The code doesn't use Bitcoins, it simply counts satoshis. A "Bitcoin" is simply the label for 100 million satoshis. So you aren't "adding decimal places" you would have to actually introduce the concept of the digital point and thus fractions of a satoshi - the implications would be very far reaching and (I suspect) it would be very, very difficult to do.