I've given up on trying to change the world.
> What will the world will be like in the future is decided by us every day.
That's the problem.
This "us" you're referring to. People. They're the problem. They have no principles. They stand for nothing. They think they do, but the reality is their principles are easily compromised. They are highly susceptible to manipulation by way of emotion. Powerful emotions like terror and rage.
Conjure up some drug trafficking, money laundering, child molesting terrorist boogeyman and they'll compromise immediately. Suddenly freedom is being traded away for security. Suddenly free speech is no longer absolute. Then you see that these weren't principles that entire nations were founded upon, they were more like guidelines, thrown away at the first sign of inconvenience.
The harsh truth is that danger must not only be accepted but embraced in order to have true freedom and independence. The internet that connects us also connects criminals, the cryptography that protects us also protects criminals. There is no way around it. Compromise even a little and it's over.
People are the problem. They endlessly compromise on things. No ideal can ever be reached. It's an existential problem that cannot be solved.
To be an idealist is to be an extremist. Sadly people are not prepared to pay the costs of idealism. The ideal of a decentralized, encrypted and uncensorable communications medium, for example. It requires that they accept the cost that criminals will not only use it but be enabled by it. They won't accept it. Thus we march not towards the ideal but towards its opposite: centralized plain text surveilled and controlled communications.