Actually, both you and @TheRippaMan are both right on this account. The "design" of a feudal manor was as follows:
- Lord appointed (or elected!) to run the Manor House itself and oversee the fief.
- The lord is responsible for organizing / rotating the crops, keeping the books, managing the money, signing on the needed serfs, collecting the taxes, and acting as liaison for their lord and, by degrees, the king/queen.
- The lord was responsible for peacekeeping, acting as judge in a criminal matter, and raising levies in the event of a war.
- Peasants signing on as serfs were doing so for life, and for their future generations. (This is the misconception of the modern day. In our modern world, "signing your life away" to a company would be (is, in America) viewed as illegal. To a Medieval, it was the highest form of security you could hope for. You were promised a place to live, a wage, relative security, and that would pass on to your children. This was like getting a full-time job with Google for life, and they would pay for your children's college education, too.)
- Serfs were responsible for meeting the harvest quota for the fief, and they were also gifted a portion of the land to grow their own crops for their own personal use. They also has to pay taxes, which was EXACTLY the same situation as it is today. (Taxes simply svck. Taxes will always svck.)
- When a lord raised levies, serfs would normally leap at the chance to become a recruit. It was added pay, plus the ability to keep any booty. It was risky, but those who returned often became very wealthy men. Plus, honorable service in war would earn prestige and could result in a family advancing up the ladder to nobility. Peasants being "pressed" into service did not happen much, and when it did, it almost always caused problems.
It wasn't heaven-on-earth. It was a simple, hard-working system. People earned their keep. Life was relatively unchanged from generation to generation. Serfs did not want to leave their land. It was their hearth and home, and had been since their great-great-great grandparent's time. The lord of the manor...was one of them! It wasn't some high-born fop from the palace in London, it was a serf that had been raised into the position. The fief governed itself almost entirely. Its needs were met, as the populations were quite small. Everyone knew everyone, like a big family.
Look at historical accounts from the times, and you see that most "early deaths" were tragic accidents...killed in a fire...fell into a river and drowned...attacked by an animal while hunting...died of a pox... Not too much about...murdered by our @#$%!ing "lord" for failing to bow low enough.