Update: I dropped $75 on a CGC graded copy of Amazing Spider-Man #300 and it's just been sitting in a box.
I bought it at a con in Cleveland last year thinking it was a cool piece of comic history to own. But honestly, I never look at it because it's sealed up and I can't even flip through the pages. It feels more like a stock certificate than a comic book I can enjoy. Has anyone else felt let down after buying a slabbed book they were really excited about?