Why would capital gains be taxed in the first place? It's simply double taxation on the income
Why is that obvious? Doesn't a rule like that necessarily create distortions in who gets all the benefits of civilization? For example, in only income is taxed, but not gains on investments, doesn't that mean that working people do ALL the work AND pay ALL the taxes, while people who are rich enough not to work literally do NO work and pay NO taxes?
People like you don't realize that economics involves living, breathing humans.