Sort:  

And having the correct tools. Victorinox has a sharpening tool, but I never got one; or we can send them the knife and it comes back brand new. To be honest, depending on the model it's easier to just retire and get a new one xD

I like to have the skills to be more self-reliant, it's something of a hobby for me to work towards acquiring them, but some things must be left for the professionals I guess.