I know. My mower is 20hp and it doesn't notice if I pick up the sticks or not. Blades are fairly new though. Don't want to chance getting them bent up just yet.
They are not cheap. The last two years I had to replace one now I have enough to sharpen a set before stick apocalypse in the spring! I have a lot of rocks that creep up in the spring that kills them. Wait until it is belt time. 75 or so for the one I use, it is a six sided belt.