Trust me, I've read more Marx than 95% of the Marxists out there: I've read his "Capital I" (Capital II+III are on a bookshelf which right now stands behind me), his German Ideology and other works from his younger years. I genuinely think of him as one of the most brilliant minds of the 19th century and one of history's best when it comes to human sciences, it's just that when it came to economics he was so very wrong. You don't have to trust me on this, you don't have to trust your logic or anything else of that matter (which would suffice were you to read a writer like Say in parallel with Marx, let's say) you just have to look at the economic history of the last 150 years or so. Marx's view on economics proved to be utterly wrong.
> Market forces can be massively disruptive to people's lives and when people's lives are disrupted by forces beyond their control (whether by natural or economic disasters) people generally petition their government to Do Something About It. I'm having a hard time believing that you're ignorant of really basic historical trends like governments losing legitimacy and being overthrown due to famine or similar adverse economic conditions.
And suppose a famine is around, what should a Government do? Invent food out of thin air, like in Star Trek? No, it can't do that, because we live in real life not in science fiction. The matter of fact is that looking back at history the most effective ways of dealing against famine involved less Government meddling, meaning less taxes on transport, less taxes on sales/purchases of food. That's one of the first signs telling you when a Government has started losing the grip on its constituents, i.e. when it starts lowering taxes on food because of its own volition (for a recent example look at Sisi's Egypt).