Bitcoin is the gateway for redistribution of wealth. Begin decentralized has given the opportunity for money to be in the hands of ordinary people whenever they want it. This has mitigated the the unjust financial situation that is in the world.Bitcoin as new hope humanity because in this kind of business many people's all over the world has a chance to become rich or many people have a chance to have better heights in life
I wouldn't say its a gateway, meaning a door...but its more like a portal. What I mean by this is it literally transports you from one universal way of thinking to another. There is no transitional period. To say its a gateway is to allude to "slow change", as you must walk through such a gateway. However, a portal just immediately takes you from one place to the next.
So then, Bitcoin is like a Portal...unless we are talking about Stargate in which case a gateway and a portal are the exact same thing ;-)