My attitude towards both accents is strongly biased because it is mostly base on media and popular culture, haha.
I didn't like American accent, to be more specific, the west coast accents, because most Hollywood movies presented them as materialistic and superficial. So I started listening to BBC English programs and watching British dramas and movies featuring British and European actors when I was in high school.
Since then I have preferred British accents to American ones. And it is easier for me to pronounce the British ones, as the almost every Americans roll the "r" sound, which is making my tongue very stiff and sore :P

      語言沒有什麼絕對的對與錯，只有「相對」比較接近「官方標準」。
      我同意發音準確的老師確實比較能夠幫助學生辨別音義，而發音準確也能使溝通「相對」容易（至少在於聽講部分不會令人誤會，但是溝通還涉及語氣、方法、雙方態度等等更深的層面），然而語言的目的並不僅止於「發音標準」。
不是每個土生土長的美國人都說得一口「標準美國音」，漢語以及任何語言也是一樣的道理。
      我們不能指著一口波士頓口音的美國人說「你的發音嘔啞嘲哳難為聽為聽，所以你不是美國人」，一個人說話好不好聽其實是很主觀的，各種主觀刻板印象也是因著歷史文化、社會變遷形成的，其中包括我們平常習焉不察的階級歧視、族群歧視等等。
      我們可以指責語言老師的發音不夠標準，因為駕馭語言發音是他們的專業職責，但是我們沒有權利武斷地嫌惡他們固有的口音，因為這代表我們不尊重、不了解他們的成長背景。綜觀歷史上的種種紛爭，無一不是肇因於「不尊重」與「不了解」。
      心胸寬大點，試著去接納不同地區的語音變異，你會發現世界其實比你想像中寬廣。

I have been living in Taipei for most of my life so far, but I long to reside in the countryside in the near future. While convenience of big cities is undeniable, it is arguable whether big cities offer "better" life opportunities and experiences. I have met or known many people who are from the countryside and have spend considerable amount of time in big cities, mainly to study or work, and have observed the dark sides of city life, such as alienation, high costs of living, consumerism and materialism. 
We need both cities and countrysides. However more and more people are flocking to big cities, especially in Asia, to look for job opportunities due to deprivation caused by industrialization, modernization and capitalism. And people who flock to cities in this context usually do not have better prospects in the long term, while small towns and countrysides are "malfunctioning".
Therefore, getting closer to nature is just one of the reason why I want to reside in the countryside. Another important factor is that I want to revitalize the rural areas and have a career with better life quality (with less hours to work, less concerns about daily expenses, and less pollutions). 

Because it is exciting to "switch" your brain. For me, the perk of learning foreign languages, especially the ones that I am not familiar with, is that it helps discover the other sides of myself that I am never aware of. As an Armenian proverb goes: "As many languages you speak, you are that many times a person." (quoting from a TED talk) You will learn another set of value system, logic and aesthetics while learning the language. And the more languages you learn, the more cultures you understand, making you more tolerant, open-minded and empathetic. In terms of the sounds of languages, well, I'll say language learning is good exercise for the vocal tracks, facial muscles and neuron system. The vocal tract is the musical instrument that we are born with, and languages are like the music that we play with our own bodies. With the discovering of new sounds and sound patterns, we also get to know how to control our physical bodies better (at least the vocal tract, haha). And sometimes, the sound patterns and grammar of the foreign languages are so different from our mother tongue(s) that it feels like we have brought up a completely different personality while speaking them! It gets more interesting if your target language uses a writing system that is different from your native language(s). Maybe you will find yourself capable of writing beautiful handwriting or being artistic, because it will take extra time, attention and energy to learn the writing system, not wanting to make any mistakes. To sum up, It is like a never-ending quest to explore the nature and capability of yourself.

附有字幕>with subtitles 附中文字幕>with Mandarin Chinese subtitles

至於你說的閩南語注音，都可以在萌典（有手機版app！）上輸入漢字查詢，它會標示注音、羅馬拼音。 不過我還是比較喜歡用羅馬拼音，因為大部分人對於羅馬字母比較熟悉，不用再另外學習一個拼音系統@@