Would you ever give your passwords to friends?

No, I wouldn't.  I wouldn't give my password out to anyone.  If someone has your password, they can access anything that you use that password for.  Say its the password to your email account.  If a friend has that, they can log on to your email account and send emails to people or do things in your name.  There's also the chance that they could accidentally tell someone what it is.  The safest thing is to keep your password to yourself and not to tell anyone else what it is.  This way your password won't get out there and everything will be safe and secure from others.