I have a #000 screwdriver that's part of a larger kit, but it's only about two inches long, and it's not magnetized. I got tired of this.
I especially like the magnetized bits. No more dropping microscopic screws into the bowels of my poor, long-suffering laptops!
I am liklier to take more things apart now, but how is that a bad thing?
Don't dither about getting this kit. It's gonna be a great help.