The Holy Quran is the most important book for every Muslims. Ironically, nowadays many Muslims are shying away from the holy book's teaching which was revealed to Prophet Muhammad PBUH. To forget Quran means that you are renouncing a large part of your Muslim identity.
In order to understand why it's dangerous to abandon Al-Quran as a Muslim, we have to take a step back and understand what are the roles of the noble Quran itself.
The main function of Al-Quran is to show you the direction in life or Al-Huda. It helps you to decide on what's best when you are making life decisions and it also gives you guidelines and advices . If you forget Al-Quran, it means that you will lose your life compass and you are in danger of being led astray. If you strayed from the righteous path, you might cause harm not only to yourself but also to your surroundings.
Al-Quran also gives you a clear line on where to separate the good from the bad (Al-Furqon). The words of Allah will teach you how to differentiate between evil and righteousness. To forget Al-Furqon will put you in risks of doing wrong things. If you don't know that what you are doing is wrong, you may bring yourself a calamity on your life.
The third function of Al-Quran is to heal you, Assyifa'. In Quran Surah Yunus verse 57, Allah SWT said that Al Quran is a medicine which will mend you from mental sickness inside your chest. If you forget Al-Quran, your problems which are buried inside your heart may give you a lot of stresses, and there's no better medicine other than what Allah has created.
There are of course many more functions or meaning of Al-Quran, not just those three. But it gives you the big picture on what are the dangers in forgetting Al-Quran for Muslims and thus remind the believers to always keep it close to their heart. Amen.
Sources:
https://quran.com/?local=en
https://hot.liputan6.com/read/3931864/fungsi-al-quran-bagi-umat-manusia-petunjuk-jalan-yang-benar
https://konsultasisyariah.com/25359-makna-al-quran-sebagai-penyembuh.html
This article is written in order to qualify for writing project bid.