Heh...cause I only gots one good arm and need a little stub to 'pinch' onto while trimming. It used to be a real bitch in the days before internet porn. Imagine having no free hand to turn pages. Anyway, I BS folks and tell 'em it's like the difference between big ole generic watery tomatoes and vine ripened organic ones. The stem lets it dry slower and retain proper moisture longer in the jar. There's a grain of truth there, but it's mostly totally completely bullshit.