港币，作为香港特别行政区的官方货币，沿用了数十年的港币制度依然保持稳定。然而，为什么港币没有取消？以下是几个原因及其英文翻译。

首先，港币与美元的挂钩是稳定港币价值的重要因素。由于香港的经济与美国经济密切相关，港币与美元的挂钩使得香港的货币价值更加稳定。这一制度是建立在固定汇率的基础上的，旨在防止港币价值大幅波动，有利于香港的国际贸易和金融稳定。英文翻译为：The peg of Hong Kong dollars to the US dollar is an important factor in stabilizing the value of Hong Kong dollars. As the economy of Hong Kong is closely related to the economy of the United States, the peg of Hong Kong dollars to the US dollar helps to maintain stability in Hong Kong's currency value. This system is based on a fixed exchange rate, aimed at preventing significant fluctuations in the value of Hong Kong dollars and facilitating Hong Kong's international trade and financial stability.

其次，港币作为香港的法律货币，具有法定地位。根据香港法律，港币是香港特别行政区的法定货币，由香港金融管理局发行。因此，取消港币需要修改相关法律并获得立法机关的批准，这是一个复杂且需要时间的过程。英文翻译为：Hong Kong dollars, as a legal currency in Hong Kong, have legal status. According to Hong Kong law, Hong Kong dollars are the official currency of the Hong Kong Special Administrative Region and are issued by the Hong Kong Monetary Authority. Therefore, abolishing Hong Kong dollars requires amending relevant laws and obtaining approval from the legislative body, which is a complex and time-consuming process.

综上所述，港币之所以没有取消，主要是因为其稳定的货币制度和法定地位。尽管随着科技的发展和国际贸易的变化，港币可能面临新的挑战和机遇，但目前来看，取消港币并不是一个可行的选择。英文翻译为：In summary, the reason why Hong Kong dollars have not been abolished is mainly due to their stable currency system and legal status. Although with the development of technology and changes in international trade, Hong Kong dollars may face new challenges and opportunities, at present, abolishing Hong Kong dollars is not a feasible option.