According to my opinion, I think It's income and should be taxed. There should be a tax on capital gains because it's income and the current law is that people pay taxes on their income. If we want to debate or reform that policy, perhaps we should, but then it should be targeted at all kinds of income taxes, not just capital gains taxes. Getting rid of capital gains taxes by themselves is simply a way to cut taxes on the rich, because the rich make more money through capital gains than poor people do.
What is your thought on this matter?
There are actually 2 questions here - should people be taxed on capital gains and (if the answer to the first question is yes) what should be the rate of tax on capital gains. Most countries tax capital gains, but tax them at a lower rate than income. The reasons are two fold - one is that capital gains are made after investing income which has already been taxed. The second is to provide an incentive to people to invest, rather than spend their money.