Card fact: All things being equal (i.e.: card condition), this is the most expensive card in the set.
What I thought about this card then: I had this card as a youngster. Not sure what happened to it. Don't recall thinking much about it.
What I think about this card now: Well, I can tell you what I thought about it when I was completing the set in 2004: "Damn, I had this card when I was little and I traded it away and now it's going to cost me a bunch to get it in anything resembling decent shape."
It did cost me. I waited a long time to buy it. It was one of the last cards I needed for the set. I set aside the day I bought it as my "Robin Yount Rookie Card Purchase Day."
Other stuff: It's not often that you see an 18-year-old on a major league baseball card -- or it wasn't until the 1990s, anyway. So that is a big reason why this card is so valued. Of course the other reason is it is a rookie card of a Hall of Famer.
I vividly remember when Yount made news because he said he was going to quit baseball and become a professional golfer. I knew nothing about golf then and I thought it was the most ridiculous thing that anyone had ever said. I remember thinking, "if Yount becomes a pro golfer, it will be the dumbest move ever." I couldn't fathom anyone wanting to leave baseball.
Oh, and Yount just doesn't look the same without that trademark mustache.