The Prophet Muhammad pbuh said:
According to Sunan Ibn-I-Majah Volume 3, Book of Intoxicants, Chapter 30 Hadith No. 3380.
“Allah’s curse falls on ten groups of people who deal with alcohol. The one who distills it, the one for whom it has been distilled, the one who drinks it, the one who transports it, the one to who it has been brought, the one whom serves it, the one who sells it, the one who utilizes money from it, the one who buys it and the one who buys it for someone else.”
In Sunan Ibn-I-Majah Volume 3, Book of Intoxicants, Chapter 30 Hadith No. 3371.
“Alcohol is the mother of all evils and it is the most shameful of evils.”
In Sunan Ibn-I-Majah Volume 3, Book of Intoxicants, Chapter 30 Hadith No. 3392
“Anything which intoxicates in a large quantity, is prohibited even in a small quantity.”
So seeing as so many embargoes are placed on the consumption of alcohol, the reasons behind it are quite predominant.
Alcohol is a form of a hallucinogen, meaning it has adverse affects on a person’s nervous system- brain. Alcohol reduces and individuals ability to self control and their agility. People are told not to drink and drive as alcohol impairs their response times and therefore they put themselves and other in danger. This same situation can be extrapolated to other activities. Many drunk people make a mockery of themselves by doing things like drunk dialling, which is another example of how self control is impaired making people do things they wouldn’t do in a sober state.
Now these issues affect everybody so how can this scenario be specifically applied to Muslims? Well Muslims pray five times a day and if one is not of sound mind then they are likely to forget of this obligation or not fulfil it with properly. Furthermore, when one has no self control they are more likely to commit other forms of sins such as adultury or aggressive behaviour.
All this is aside from the fact that alcohol causes many health hazards and harms vital organs. In islam afflicting any form of self harm consciously is also sinning. Therefore drinking a slow affecting poison fits that misdemeanour also. The Western world is slowly catching up to these vices and the harmful nature of such habits, however, Muslims have been blessed to receive their warning through the Qur’an, directly from God.
“O ye who believe! Intoxicants and Gambling, (Dedication of) stones, And (divination by) arrows, Are an Abomination Of Satan’s handiwork; Eschew such (abomination), That ye may prosper.” [Al-Qur’an 5:90]