Stock market is simply a place where buyers and sellers will meet. Either buyer or seller will be a looser or gainer at the end of the day and it contributes to growth of Indian economy by changing of money from pocket to pocket and a normal person also can become a owner of the company by investing small amount of money and actively take participation in the company.
Share market is a business if u do trading with knowledge and discipline. Overall it will be helpful for business by raising capital, dividend for shareholders, tax for government and employment opportunities for stocks brokers. etc..