Why are we still using discs instead of cartridges?

[SvennoJ]

SpokenTruth said:

SvennoJ said:
Tiny flashcards would be a nightmare with kids.

DS, 3DS and Vita say otherwise.

That was in the context of Micro SDHC, MMC cards, saving costs by going small. Cards that barely cover the tip of your finger.
Vita cards are pretty small already though, I guess kids are better at not losing those cards than me :)

Anyway doesn't matter how small, it's still far more expensive to produce than pressing a disc.
Plus the physical box the games come in aren't that much smaller than a blu-ray, not a lot of savings on size.