为什么要上税？这个问题的答案可以从多个方面进行解释。以下是对这个问题的解析以及英文翻译对照：

首先，税收是国家的收入来源。政府通过向公民征税来获得资金，以提供公共服务、实施政策、维护社会秩序等。税收是政府履行其职责和义务的基础，也是国家运转和发展的必要条件。英文翻译为: Taxation is the source of revenue for the government. The government raises funds by taxing citizens to provide public services, implement policies, maintain social order, etc. Taxation is the basis for the government to fulfill its responsibilities and obligations, and is also necessary for the country to operate and develop.

其次，税收可以调节社会分配。通过税收，政府可以对收入和财富进行再分配，减少贫富差距，促进社会公平和稳定。税收可以用于社会福利、教育、医疗等公共事业，提高人民的生活水平和幸福感。英文翻译为: Taxation can regulate social distribution. Through taxation, the government can redistribute income and wealth, reduce the gap between rich and poor, promote social equity and stability. Taxation can be used for public welfare, education, healthcare and other public undertakings, improving people's living standards and sense of happiness.

最后，税收可以调节经济。税收可以影响消费和投资，从而影响经济增长和就业。通过调整税率和税收政策，政府可以刺激或抑制经济活动，以实现经济的平稳发展和资源的有效利用。英文翻译为: Taxation can regulate the economy. Taxation can affect consumption and investment, thereby affecting economic growth and employment. By adjusting tax rates and tax policies, the government can stimulate or suppress economic activities to achieve stable economic development and efficient use of resources.