Life as a peasant was fine until it was not. If a flood or drought wiped out your crops, you were completely screwed. You might be able to get by with rationing or foraging, but you'd have to start over the next year weaker and demoralized. As populations grew, it becoming increasingly riskier to live off the land, which is why they moved to the cities where they can earn money that you can save in the case of an emergency.

You live in an age of excess, where you can always fall back on the welfare of others, so you can't imagine working 12 hour days in shitty conditions, but this is not the case for people who moved from hundreds, if not thousands of miles away to work in a factory. For them, an extra hour of work is an extra hour of security. The fact that billions of people made this move is evidence that rural life was that bad. Dismissing these incredibly thoughtful decisions as the result of capitalist propaganda completely dismisses their agency.