Knives in general only need to be sharp, honing beyond a few thousands in grt. is a waste of time. Unless it going to be used in combat.
I've been sharpening all sorts of things since I was 8 year old, starting with knives.
As criswilson10 said, its all in the techniques. Razors were a lot easier for me than for most. I guess because they have a built in honing jig called a spine, where a knife has to be gauged by hand and eye to keep the proper bevel. The hardest thing I've ever honed were the broadheads for my bow.