Going from my last 10 years (undergrad/teaching/grad school) of pulling several all-nighters a semester, and generally getting less than 6 hours of sleep a night (if I was lucky), I think I've entered a fairly balanced stage now that I'm no longer taking coursework. Even though I have to wake up early for the fish factory, I still get at least 6 hours, often closer to 7 on weekdays, and 9+ on the weekends. Being married helps a lot with this pursuit... and not being in a long-distance relationship anymore (now we're just a few feet apart, lol)!
But, I know this is just a lull for a few years before we start having kids... then the sleep will drop again to ungodly levels. Let's not talk about that.