First, as was pointed out by other participants, capital gains tax is paid on the money for which income tax was already paid. In effect it is a double taxation.
Second, capital invested in a coproration (whether you are buying a share of stock or opening a new factory) - is capital placed at risk. You are liable to lose everything or almost everything and thus will have incentive to invest unless the taxation rates are low compared with other other, more stable ways of making money (like going to work).

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Новые фотки - у дочери на дне рождения. 16 лет. Very BIG DEAL !!!