With the development of public transportation, the necessity of investment in building and improving public transportation is increasing in society. Some people argue that constructing new railway lines for very fast trains needs to be prioritized. However, others think that improving existing public transportation is more important than making new railways.
On the one hand, it is valuable that managing public transport which is already taken by many people. Spending money on repairing and improving existing public transport is able to make a large number of public conveniences. This effort can satisfy people's small complaints when they use public transportation. If a government doesn't address small problems related to public inconvenience, public transportation would be an obsolete system in a society.
On the other hand, I am of the opinion that there needs to be sufficient money for building very fast trains. As time goes on, people get to need more convenient and useful technologies. Constructing faster trains than the past help citizens not waste time on moving. To illustrate, a new railway line for Busan to Seoul was made a few years ago, and, this decreased time for moving between the two cities. The line is popular transportation and users are satisfied with this line. It is necessary to spend money on making useful systems for the public.
To sum up, from my perspective, there are advantages and disadvantages to building new railway lines for fast trains. However, It is evident that fast trains would help people move cities easily and conveniently, provided that the lines are built after taking account of necessity and disadvantages.