Hobbyists buy cards they personally like, usually for binders or playing decks
Artist Proofs & Altered Cards This category is all about uniqueness: Pieces you wont see every day
Adding 2 mana in a combination of colors enables lots of multicolor cards like Omnath, Locus of All, and Niv-Mizzet Reborn which would be far harder to use otherwise
Not Competitive Shouldnt Mean Not Balanced Commander may not be competitive in the sense it isnt played for prizes, but it is still a competition
I play Porcelain Legionnaire in more red decks than white decks, but this functionally colorless creature continues to stand out on rate from Pauper Cube all the way to Vintage Cube
Gyruda also fails to work in the main list of a 60-card deck, as its mana value of 6 makes it an unwieldy creature to fit into anything that's facing faster decks, such as Eldraine Gruul and Dimir Rogues during Ikoria's time in Standard