Reason to buy Stocks?

There has never been a good reason to buy stocks since 1875 when BSE was formed. There has never been a good reason to buy stocks when Sensex base = 100 in 1986. Bofors and Billion scams later, million mutinies later, hundreds of double-decker depressions later, multi-polar world now and India today still dont see a good reason to buy Stocks at Sensex 17000. Wish somebody told difference between a stock and a bond in Xth class syllabus.