"We live in capitalism. Its power seems inescapable. So did the divine right of kings. Any human power can be resisted and changed by human beings." - Ursula Le Guin
Lots of things are impossible until they happen and become inevitable. The human mind has a tendency to place things in that box that don't really belong there. We can see it in people's personal lives, "Oh, I could never possibly stand up to my parents!" and then they do, and the chips fall where they may. "I could never leave everything behind and move to another country/city" but you take a leap of faith and you make it work. "Oh, I could never become a soldier," but then you find yourself in the trenches and you become one. Humans are far more adaptable than we give ourselves credit for.
But the things that need to happen are things that we have determined rationally. The bias that exists in our minds when there is such a conflict is to ignore reason and evidence and think that we have to follow our self-imposed restraints and limitations, and if that's not enough, well, too bad, maybe it'll still be fine somehow. It is easier to simply pretend a physical problem doesn't exist then it is to confront a psychological barrier - but the physical problem remains whether we acknowledge it or shove it aside.
It is abundantly clear that there is a mismatch between what the US political reality is capable of delivering on and what actually needs to happen, on an increasingly large number of issues. Wealth inequality increases every year, and there is no path to stopping it. Every year we get closer to ecological collapse, heading towards tipping points that will spiral out of control. And of course, the military-industrial complex gets larger and larger, now fueling a genocide with overwhelming bipartisan support.
All of these things need to change, but it is also impossible for them to change. So we have no choice but to do the impossible (see the invisible, row, row, fight the powah). It is impossible that we could convince the democrats to change, they are too attached to their corporate donors. Too bad, we'll get them change anyway. It is impossible that we could build a third party, it isn't viable in FPTP. Too bad, we will build it and make it viable anyway. It is impossible that we could resist the strength of the military and police. It is impossible to organize a general strike. Boycotts can never work. The king would never allow us to have a constitution. Too bad.
The limits of existing political systems have been overcome in the past even when they seemed impossible, and the desperate need for change means that the limits of this one will be too. Shit is headed towards the fan, and things will change, for better or worse. The longer we wait, the more shit will build up. Only by finding a breach in "impossibility" can we start to address any of these problems.
Where will that breach be found? Who knows? All we can do is search for cracks and hit them as hard as we can until we find a way to break the limitations. We can discuss where to focus our efforts and that's a valid and important discussion to have. But we cannot allow the functions of the existing system to limit our efforts to break out of it. You cannot be so concerned about damaging an already sinking ship that you won't rip off a plank to hold on to.
I don't really care who you vote for or don't vote for. Follow your conscience. What's important is that you have your head in the game. What matters is recognizing the the things that what needs to happen is a function of immutable natural laws while what can happen is a function of mortal laws and conventional wisdom. When there is a mismatch, to uphold the ideas of "what can happen" is to reject that "what needs to happen" is actually real, which is no different from thinking you can change the laws of physics by passing a bill in the senate. The "reason" of conventional wisdom must be kicked to the curb in favor of actual reason that says things need to change, and that it's necessary to go beyond the impossible to make it happen.
Profitable for the rich. Defense for the rich. Both are points against.