Should i learn Arabic for the purpose of figuring out if the Quran is the word of God?
You can't help yourself can you?
Brothers and sisters, this user has a history here on this forum of trying to put doubt in the minds of the Muslims, just read his other posts. He normally posts questions and then never responds to the topic except his initial post.
Read his question carefully. What he is really saying is if you can't read Arabic, then you will never know if the Quran is the word of God.
The answer to your question is most definitely, NO, and the thousands of non-Arabic reading converts to Islam each and every year is a testament to this fact. Guidance is from your Lord alone regardless of what language you speak or can read in.
Should one learn Arabic to appreciate the Quran linguistically and also to receive its miracle, then the answer is most definitely YES.
Each prophet came with their message and their miracles separate to their message ie Moses (peace be upon him) came with his message and the splitting of the sea was a completely separate miracle. Muhammad (peace and blessings be upon him) on the other hand came with both his message and miracle all in one, the Noble Quran. Whilst a translation may translate the message on a limited scale, you cannot translate the miracle of Quran and that is still sufficient for the thousands who convert to Islam every year but if you want to experience the miracle of Quran, then you must read it as it was revealed in Arabic and with tafsir.
Even though there are fluent Arabic readers among the non-Muslims who have read the Qur'an in its original form and have still rejected the message, this is proof that Allah Alone is who guides regardless of language.
Hope this answers your deceptive question.
May Allah open your heart to Islam and guide you to the truth, Ameen