When is it no longer ostentatious to label your collection?

I'd like to get some opinions on what your collection needs to contain before it is no longer ostentatious to label your collection on a grading company's slab.

It seems like pure vanity to me, but then again it has always been a temptation in the back of my head to shell out a few extra dollars for the addition on the label.

Collecting baseball cards is ostentatious, slabbing them: even moreso. Personalizing the slabs is just like waxing the tires on your Snootmobile. Its all for fun, and nobody should take this real seriously = go for it !