cyclical bulls last from 2-7yrs in a secular bear...we could say we're in the middle right now.
I dont think we are going to visit the 2009 march lows again...for that to happen a panic(20%+ in a matter of weeks) has to occur...a panic occurs in the middle of a bear market(30%+ decline) driving prices 50%+ down.
It is clear we're not in a bear so there can be no panic considering theres a lot of money waiting on the sidelines.
A crash(20% decline in a matter of days)occurs at the peak of a bull....considering the fact that this bull is pretty young(barely a year n a half old) that is not likely gonna happen right now as the shortest cyclical bulls lasted 2yrs.
The market may rally 1000pts to 2007 range which is the tradeable range of this bull after climbing the "wall of worry" for a few months and then when most people are fully invested ie no sideline cash...the great secular bear begins(around mid 2011-2016)...the trick is whether one will spot it...lots of volumes with no further progress(remember 2007)
Remember the markets are never wrong opinions often are...well this is just an opinion...but if one is the student of market valuations there is no way the current p/e of 20+ for the S&P is sustainable for even a decade.
The utimate goal of investing is to buy low sell high;if we re-write this core equation in psychology terms it becomes buy fear sell greed.