I agree with everything everyone has said so far.
Collecting cards, outside of a few obscure collecting focuses, to me, has been more about, do you have enough money to complete your set in a specific condition. Even before grading, people focused on not just completing a set, but wanting a condition. Grading and set registries have made this feature an even more prominent aspect.
For me, it's not just about the hunt, it's about exploring the boundaries of what you collect. Memorabilia has so many twists and turns that even if your looking for one things, you wind up with something else that you never knew was a thing.
Cards definitely scratch that inner ocd itch that most collectors have to differing Degrees and they do it in a much more straight forward way as sets are, for the most part, a finite number. If there are 100 cards in a set, then you know the goal. This is the way, the overwhelming majority of sets are.
Memorabilia, on the other hand, has many less examples of things being "sets". It's more of a free flowing journey from one thing to another.
Imo, memorabilia connects me more to the game and the people that played it. Cards connect me to my own childhood passion that involves our more innocent youthful life, among others.
Lastly, I will link a post I made several years ago that is really the perfect example of why I love collecting memorabila.
https://r.tapatalk.com/shareLink/top.....Find....Ever
Sent from my SM-F946U using Tapatalk