Because people are dying or getting ill. And you wouldn't like you or your friends getting hurt so don't hurt others. Save yourself and others.
well this is really more of an opinion question but I think people volunteer for military service to serve their country and to fight for their freedoms.
This is my opinion though so feel free to say your own thoughts.
i personally think it is better to learn from yourself than from others. if you are going through the expirience yourself, you know how it's going and feel the emotions in that exact moment. if you were to learn from someone else you wouldn't know how it actually feels to be in a situation like that to actually avoid it.
The new meaning would be (B). It becomes a verb that means "To punish for breaking a rule or a law".