<Snipped quote by MachinaDomina>
If I could I would but if I did I know I would end up hurting myself and others.
<Snipped quote by Blackmist16>
For me it depends on the coffee and my daily condition. Sometimes I can drink coffee without end, sometimes one tiny cup with a bit of milk makes me feel like close to a heart attack.
I don't drink any noticeable amounts of alcohol either. Even without any alcohol addiction problems in my family. So it is definitely possible to survive without that stuff :)