Are we going to witness another bubble?

People who know more about Wall Street are talking about the next bubble.  Should we be worried?  I hope not.  There are people who probably benefit from market bubbles.  With the baby boomer retiring and I know few that are about to retire, I hope their 401(K) will not suffer again.  They've worked hard and deserve to retire with enough money to leave the rest of their life financially stable.  Some that have retired have to get another job to stay afloat because the stock market bubble of 2007 wiped out their investments.  The baby boomer deserve to retire with dignity