Stock market follies

It appears that we are still in the throes of the apparently neverending opera,that is the stock market follies.Does any one know how long the stock market has been in existence and why a few naysayers are behaving as if the whole thing is suddenly going to go belly up,i have said it before and i,ll say it again the stock market will rebound from this and the ones who will gain are the ones who bought up everything in sight whilst they were cheap.