Marty Shapiro writes:

You don't have to constantly keep your hands on the controls of an
aircraft even a light aircraft without an autopilot. There is a reason
aircraft control surfaces have trim capability, you moron.

There's a reason autopilots were developed, namely, that it's very tiring to
hold the controls for hours and hours. It's true that you need not grip them
continously, but neither can you ignore them for very long if you have no
autopilot.