Any change you want to make to the world will involve disrupting the natural order. Doing that requires energy and causes friction. The river puts the water where it wants; if you want the water somewhere else, you have to disrupt the river.
That means that some people will be upset, even if the changes you’re trying to bring about are pretty universally good. Even if the people involved want the changes, they’ll resist the process to get there.
Resistance isn’t the same thing as reluctance. It takes effort to move a rock, but that’s not because the rock doesn’t want to be moved. It’s just a fact of the universe that change requires energy to overcome inertia.
The Opportunity Machine 