also...
in general - strong market moves are caused when the market HAS to move. in general, markets move when these things happen
strong bears mean lots of shorts and puts. when their stops start getting hit, and ESPECIALLY margin call liquidations, that 's when markets really move - because they have to. it's a cascading effect.
without bears, not only is there nobody left to buy, but as soon as longs start getting stopped out/margin called, there is nowhere to go but down
that is why market climbs a "wall of worry"
fwiw, the thread title is kindof funny considering we have been in a great bull market for several years, just not the same issues as in the 90's