Investors have to remember: corporate profits are going up, but stocks are going up faster. How can that continue indefinitely? Investors can only earn what companies themselves can earn; the government or the markets themselves don't kick anything in. How can you get anything more out of a farm than what it grows?
The thing I know for sure is that at the end of my life, what I'm going to remember is the love I felt for my family and my friends, and whatever good I did for other people.