What Happens In Vegas Stays In Vegas!

What does the slogan "What happens in Vegas stays in Vegas!" mean?  Why would we party so hard that we would want to forget the party or worse yet we couldn't remember what we did?

Is life a drag for you?  Why is that?  Could it be that you are looking for the purpose of life?  What is the meaning of life and why does it seem to be a Secret we never learn -- not during an entire lifetime?  Are you happy with what you do?  Would you do it tomorrow morning if you didn't get paid to come to work?  Do you think those people in Vegas love their work any better than you do yours?  What is this purpose of life?