To put it other way, if your employee did something wrong, and you have a reason, you better fire him "without reason", or will face a discrimination case otherwise.
Good documentation is important. Firing with cause does happen and should, unfortunately, happen in some cases. Letting someone go for repeatedly making inappropriate remarks to clients or for repeatedly playing costly pranks on other staff (depending on the business and the work environment), among others, are reasons that, if you have documentation of individual events, firing with cause happens. General laziness could also be a cause, provided there were concrete examples of failing to fulfill a job description.
Why would a company bother? Unemployment benefits come out of a "tax" paid by the individual company--when the unemployment benefit account for a company is depleted when someone is let go without cause, they have to pay into it again. If someone needs to be fired, firing him or her with cause is the best way to ensure the financial stability of the company IF you have documentation.
Nobody cares what you do with your own life.
I hope someone does--after all, this is part of what relationships are about. If you've ever had the chance to parent / teach / etc., you'll know that molding the next generation is a significant draw... and a good one. It is not limited to the "religious" (as you note). People who care influence each of us, and they should--no one's perfect. Not only that, those who mold, if they truly care, are also molded themselves by those they teach (so it isn't just some insidious plot by the old to manipulate the young).
I am not aware of a single P2P program that is commonly available that lets someone download without also uploading. If there are, I would like to know about them.
For movies or music (yes, there is music there if you can demux)
Youtube+Firefox+Downloadhelper (or similar variant)
[insert random divx or flash or mp4 movie site found by google search here] + Firefox+Downloadhelper (or similar variant).
It turns out it's a way to have quick flicks right now and still save them. If you do this on a computer isolated from the rest of your network or in some fashion sandboxed, you reduce the risk of one of Adobe's countless holes causing you problems by going to the "wrong" site. Of course, you would then probably also want to keep it sandboxed, but then, most have separate media computers anyway, right?
In any formula, constants (especially those obtained from handbooks) are to be treated as variables.