Bitcoin is the first functioning fungible cryptographic digital currency ever created. It is fully decentralized, peer-to-peer, trustless, censorship-resistant, and based on a deflationary model.
- Decentralized because anyone in the world can run a full node, have a full copy of the ledger and run it on a computer, a smartphone, or even a raspberry pi.
- A trustless means of exchange: Anyone having an electronic wallet can use it, send an agreed-upon value by both parties, and conduct a transaction without any trusted third party involved.
- Censorship resistant - Anyone can input a certain set of data into the blockchain and it will forever be recorded in the said block hence immutable.
- The economic model of Bitcoin is deflationary meaning there will only ever be 21 million Bitcoins, the emittance of new Bitcoin in circulation over time is slowed down by 50% every four years and the difficulty to mine Bitcoin is slowly going up all the time.
This answer is for the more tech-savvy folks.

When I first explained it to my parents, for example, I’ve used a great explanation I’ve found in a Deloitte article by Richard Bradley, director of Deloitte Switzerland:
“You (a "node") have a file of transactions on your computer (a "ledger"). Two government accountants (let's call them "miners") have the same file on theirs (so it’s "distributed"). As you make a transaction, your computer sends an e-mail to each accountant to inform them.
Each accountant rushes to be the first to check whether you can afford it (and be paid their salary "Bitcoins"). The first to check and validate hits “REPLY ALL”, attaching their logic for verifying the transaction ("proof of work"). If the other accountant agrees, everyone updates their file…
This concept is enabled by "Blockchain" technology.”
https://www2.deloitte.com/ch/en/pages/strategy-operations/articles/blockchain-explained.html
The concept of Blockchain and by its essence Bitcoin is revolutionizing many sectors like finance technologies, real estate, and supply chain tracking just to name a few. Its applications are countless and as big a technological advancement as the invention of the internet, even greater some people advocate. On top of that, anybody can participate and learn about it, which empowers any individual that wants to peek at what financial freedom looks like.
In conclusion, I believe that such technological advancement should be shared to the most people possible to make them realize all the implications it could have in their daily lives. The same way the internet changed the way information was shared in the 1990s, Blockchain will revolutionize the deep-down fundamentals of the transactional experience partaken between two parties.
Ten years ago, they saw us like a tornado in a glass of water, now they see us as the tsunami that will take down the broken crony capitalism system in place since before my birth.
Embrace us or be swallowed.