Given the bullish market condition, is it wise to take ONLY long trades?

market is not at bullish karuna , VIX is increasing , brentĀ is falling though positive for a long term but in short term creating a pressure on india also , look at russiaĀ it is on the verge of default, greece election fear etc. creating fear in the market(as iĀ am writing your questions answer , U.S. market falls upto 1% due to brentĀ fear, for a long term INDIA is a bull market , if you are a investor then it is good to invest but if a trader than beware for term volatility!