Because government does things that large populaces can’t or won’t do for themselves. Sometimes that’s things like Social Security, regulating companies so they don’t enslave us or dump DDT all over the place, or organizing enough coordinated violence to prevent other, more aggressive governments from coming in and taking over. Sometimes, usually when the people aren’t paying enough attention, it’s horrible things like building Gitmo or supporting Israel.

Ideally, everyone would be well-informed and engaged enough to immediately hold government accountable when it does horrible things in our names, but for a lot of people life is hard, and they’ve been actively discouraged from having that education and engagement, usually by one flavor or another of psychopath who wants to get away with their atrocities and not be answerable to a decently informed and engaged electorate.

Democrats do, on balance, care more about their leaders committing atrocities than Republicans do, but the phenomenon of “I just can’t think about that right now, I’ve got other things going on” is a universal experience.

It’s right to be outraged by this complacency, and I don’t even think anyone is wrong for wanting to disengage from any political party or even politics as a whole in response, but wanting to remain morally pure and wanting to achieve anything of merit within the system we currently have are mutually exclusive goals.

If someone finds politics as a whole, and all of the moral compromises involved, so abhorrent that they don’t want to engage at all, I get it, but they’d really better start looking up how to engage in violent resistance, because change either comes through politics and all of its attendant compromises or through violence, there’s no third alternative.