I was reading the links badboy posted and it seems alcohol was prohibited because it causes people to forget Salah as well as to fight etc..
No u do not understand how Quran verses are revealed.
Allah chooses to reveal certain ayahs during the prophet sallallahu alayhi wasalams life in order for it to show the reason for the verse and we get get true understanding, but the ayaat were always gonna be revealed.
Alchohol was always gonna be forbidden in the Quran, Allah just chose to reveal it in segments for people to slowly wean off, there is a hadith proving my point
Abu Huraira reported: On the night of the Ascension, the Prophet, peace and blessings be upon him, was presented with two vessels, one full of wine and the other full of milk. The Prophet looked at them both and he chose the vessel full of milk. The Angel Gabriel, upon him be peace, said, “All praise is due to Allah who has guided you to that which is natural, for had you selected the wine your nation would have been led astray.”
Source: Ṣaḥīḥ al-Bukhārī 4432, Ṣaḥīḥ Muslim 168
Here we can see that alchohol was always bad and will always be bad, Allah would always prohibit it, its just the wisdom in revealing verses slowly which allows ppl to quit drinking.