My original thought was to leave my collection to my kids.
Now that they're adults, I see that they appreciate them, but have no real love or interest in them.
I don't want to saddle them with the decision of keeping them (because they were mine), or selling them (and using the money to make their lives easier).
So, at some point, I will slab them, sell them, and leave them the $$ (or give them the money way before I drop dead, lol).
As of now I have slabbed zero books in my collection, and I have two of the four books this thread is discussing (among others, of course).