Okay I'll bite. Any particular reason you have 506 Mike Smithson 1985 Topps cards?
If you must know, it's the one card from that year that I could never find. I bought pack after pack, and eventually case after case, and still never found #483. I passed up dozens upon dozens of what other people considered the "good" cards--the USA Olympic McGwires, the Goodens, the Mattinglys, the Pucketts, and I didn't give a ****, because they weren't Smithsons. It kept me from having a complete set of '85 Topps. Drove me crazy.
And so, to make up for that, I've spent the last twenty years buying up every last '85 Topps Smithson I've come across. And it's a sight to behold, my collection, if I do say so myself. But I think I'm gonna stop at 506.
Anyway, there you go.