Well, I'd say living a happy, prosperous life already goes a long way to spite the evil SoBs.
Nonetheless, the way I see it bitcoin is a tool in the belt of those who try to non-violently move the world towards liberty for everyone, a fight that is still, and will always be, worth fighting.
And well, maybe it's not the primary tool anymore, and maybe the mob has caught on to how it can be tracked, to me that means there is a clear and present need to further facilitate and anonymize the exchange of bitcoin for fiat cash.
Or maybe to simply mint new, smaller silver coins for daily expenses.
Bitcoiners like to say their technology is unstoppable but nearly everything can be overridden by violence, so another worthwhile cause, instead of merely evading KYC ("kill your customer") and other ways of tracking is to work to reduce institutionalized violence, break up large nation states into much smaller entities more likely to achieve consensus without the need for oppression, and truly bring about not just financial, but political freedom.
Oh and especially if you're in the US but elsewhere as well, work to strengthen individual gun rights, can't rely on the State to safeguard your liberty if the State is the only one trying to reduce it.