[Kco]

The main issue with today's cards is they are all wildly overproduced. The thing that makes vintage so appealing is the supply is capped and will always be what it is. Modern living players will continue to have cards produced, sign said cards, and contribute to the dozens upon dozens of cards available per player every year.

There will always be value in Modern, especially with the best of the best. but there is also abundantly more supply from guys who played in the 80s or after.

Sure, some signature Rookies of modern day superstars will have value and hold or go up in time, but the average card of Cal Ripken has light years more supply than 50s/60s cards of guys like Mantle, Mays, Aaron, Koufax, Clemente etc.

It will never be a nothing, but the guys like Cal and Griffey and many other players just have sheerly monumental more cards available than the 70s and before. Add to that, that people didn't hold onto their cards back in the 50s/60s or care about their condition remotely the same as 80s/90s kids, and its apples to oranges. There is a reason that these modern cards are valued the way they are, its a saturation thing. There are literally hundreds of awesome cards of Cal readily available and Cal signs 30 times a year.