I believe in privacy rights so I must believe in bitcoin. We need to take control of our future and the first step to doing that is by investing in bitcoin and losing our dependency for the almighty USD.
Bitcoin was proof it self being the strongest cryptocurrency, good alternative for people who get saturated of using paper money and such as investment too like you said. Bitcoin have so many benefit so we should believe in bitcoin.
In addition to decreasing our dependence on USD and giving more financial control to the user, Bitcoin is also a viable alternative due to the ease and security of making payments by using it. Even for a person who does not have much experience using cryptocurrencies, it does not take long until he/she adapts to it, and the benefits are evident. A lot still needs to improve, of course, but using Bitcoin as a form of payment will become easier and will attract more users over time.
I wouldn't say that Bitcoin's selling point is its ease of use. People, especially the older generation, might not be comfortable using wallets and sending bitcoins. The 'killer application' of Bitcoin still has not been developed.