Lifehack defends my #2 vice with grace and style. Snippet to follow:
This is why we start drinking coffee in the first place, right? I started binge drinking coffee in order to stay up all night working on various projects, though it didn’t take long for coffee consumption to become a hobby in its own right.
Drinking coffee improves your concentration, alertness and staves off a tired mind. For me, work comes to a halt when I’m missing any of the above, especially concentration or alertness. Ten or twenty minutes after a cup of coffee, I can be back to work for a few more hours.
Apparently coffee improves your short term memory, which indicates that I’m not drinking nearly enough of it. Did I mention that coffee improves your short term memory?
Praise the lord and pass the coffee. If you need me, i’ll be shaking from a caffeine overdose in the corner.