As with many things I first put to serious use in math class (protractors, compasses), my fondness for mechanical pencils is more remembered than real. I don’t particularly like writing with a mechanical pencil, but I keep one around the house in rare case of need — a super-precise line that my traditional pencils, whose sharpness is almost never comparable, cannot hope to achieve.
And though years pass between those needs, I can’t imagine not having one somewhere around the house. At times, I’m even tempted to try a fancier model than the Staetdler that’s been with me since high school.
What about you?