I decided that after all, I was a minarchist and not an anarchist. Let me explain.
A bigger government is where the proclaimed rulers have greater power, where public force is more positively correlated with their will, at their disposal to impose a less restricted subset of their commands, whims and desires on a wider set of topics and resources — compared to another (form of) government. A smaller government is that other comparative (form of) government where the proclaimed rulers have less power, where public force is less positively aligned with their will, and their cannot rely on it as much to impose it upon others, etc. A minimal government is thus such that there is no strictly lesser government — any comparable government is greater. A minarchist is a proponent of minimal government.
Now, anarchy is where the proclaimed rulers have no power at all, where public force is totally uncorrelated with their will, where they cannot use force to impose it upon anyone, etc. Proclaimed rulers are just laughed at, or ignored — they are ridiculous clowns whom no one takes seriously, except maybe a psychiatrist they pay to listen to them solemnly, and a few bored village idiots who aren't watched closely enough by their busy tutors. On my good days, I'm an anarchist, a proponent of anarchy.
But every time I hear a politician, I feel more like a minarchist. What's the difference? Well, in a true minimal state, rulers are not just ignored and laughed at, with public force uncorrelated to their will; rather, public force is negatively correlated to their will, and maximally so. In other words: all their belongings are forcefully taken away from them, and surrendered to their worst enemies, or dispersed to whichever charities are most outrageous to them; then they are put to death by being subjected to whatever is most horrific to them personally (just as in 1984's Room 101). Indeed, there is nothing more that a ruler can give than what he possesses, including his life, no way that things can go further against his will. And so this is truly minimal government, and that's what I support as a minarchist: fully dispossessing and horrifically putting to death anyone who claims to govern others.
When I feel optimistic I'm an anarchist and believe that the world will be fine without the need for violence. When I feel pessimistic I'm a minarchist and I understand that those who want to rule others will not be stopped by anything but extreme prejudice. Trying to establish a government is high treason against society, to be treated as such (and every government is foreign before it's established, and domestic after it is).
PS: My friend Charles summarizes: "Less than 0 government is negative government. The active criminalization of government."