If one day we are seing the same numbers of people using Bitcoin as the use email, it can suck as much as it wants to be honest.
In 2011there existed probably 3,1 billion email accounts and at the end of this year it is expected to be 4,1 billion accounts.
Damn! I want those numbers for Bitcoin!
Only way that would be possible is if major businesses will give their employees the option of being paid out in Bitcoin/and or start accepting Bitcoin as a form of payment... This is going to be a long process, because of the fact that businesses don't want to accept a payment that is notorious for having such volatile prices and purchasing power. I feel if bitcoins prices hit a major point of stability, then we will start to see businesses start to accept the payment, and therefore mass adoption.
You forgot an very important and for sure the most particular thing. The spread of bitcoin and the arise of the numbers of the people who know and use bitcoin in the figures which is used email today will bring an exceptional thing for the owners of bitcoin. Its extraordinary high price. That is for sure. The number of bitcoin is limited. So more it will be spread he more the demand will be high, more will be asked and more its price will be increased. Calculate the number of bitcoiners as the number of the owners of emails. In the beginning and when this number will be as the number of the today's email owners. The difference between those numbers can give you only an idea about the level of price in which bitcoin can arrive. Imagine ....