Market rises when it should be falling considering all the economic, political and geo-political factors.
Public (including professionals) are uncertain as to why the market is rising
Market valuations are high and yet the market keeps rising
Overbought market gets more overbought.
Divergences are ignored
Wars, Terrorist attacks, Bombings, Shootings, Bird flu et al leads to higher prices.
Negative earnings leads to higher prices
Negative economic reports leads to higher prices
Obscene bullish sentiment leads to higher prices
Seasonally crash months like october leads to higher prices
Hindenburg omen, 3 peaks and domed house, divergences, Black swan indicators, Single digit VIX, Puetz crash window, blah blah blah leads to higher prices.
Conflicting indicators/technical signal leads to higher prices
Both loose and tight monetary policy leads to higher prices
Technicians fail to respect the trend and blame it on manipulation
Both positive and negative news events leads to higher prices.
That's how a bull market climbs the wall of worry. The day the general public and professionals stop worrying about the above mentioned stuff, you should be really worried.