Bitcoin won't be eagerly adopted by everybody - it will be **forced upon** them by economic reality.
People will be forced to pay with bitcoins because no one will accept their **worthless fiat** for payments. Good money drives out the bad, and this has already started as a small fiat bleed.
-- an excerpt from the 2-minute version of Speculative Attack (2014): https://2minutebitcoin.org/blog/bitcoin-speculative-attack-on-the-dollar-2014