1.) Our life is becoming more and more digital. For a digital world, we need a digital currency. Hence, Bitcoin.
2.) Today's financial system (as a relict of the past) is heavily flawed. If we are to evolve as a human race, we need a more advanced form of money.
3.) Bitcoin is a form of decentralized digital currency which is closest to perfect money people have ever come to.
4.) Bitcoin's price chart is already following a similar profile as gold's chart price. We just need to zoom out and look at the BTC price from a larger time frame. This is pretty convincing that BTC is already a strong competitor of gold as a store of value.
5.) It is just a matter of time before large institutions and national states realize the advantages of holding Bitcoin (vs holding gold or bonds). When that happens, the last obstacle will be removed for widespread adoption.
I agree with your statement, it is very hopeful if we talk about bitcoin because from the start bitcoin surpasses everything. Bitcoin is a living proof that digital currency can be used in the future.