You're going to need them. The modern world isn't going to let you sleep when/if/as much as you need to, and trying to fight that is a fool's errand. The solution, is drugs; in this case, caffeine. Legal, delicious, quasi-harmless... it will let you pretend the Universe isn't on some twisted mission to deprive you of your much deserved rest until you finally snap in a fit of self-referential insomnia and start babbling ceaselessly about how tired you are.