I keep all my knives hair-popping sharp. Seeing as how I use my SAK every single day without fail, at night I give it a quick strop on a leather belt, and occasionally a light steeling. I haven't taken my little SAK to a stone in months, which just goes to show you that with proper maintenance, a knife can remain in a razor sharp state for quite some time.
My Mora? Well, I still have the wicked scar on my left hand index finger to prove how sharp it is. Almost losing a finger seems to be a fantastic wake up call for knife safety. I won't make that mistake again!
Adam